• Feline leukemia virus (FeLV) is a disease that impairs the cat's immune system and causes certain types of cancer. (homehealth-uk.com)
  • FeLV is usually contracted from cat-to-cat transmission (e.g. bites, close contact, grooming, and sharing dishes or litter pans). (homehealth-uk.com)
  • Although these diseases are in the same retrovirus family and cause many similar secondary conditions FeLV and FIV are different diseases, so it is important to determine which virus (if any) your cat has. (homehealth-uk.com)
  • Acquired defect of cellular immunity that occurs in cats infected with feline immunodeficiency virus (FIV) and in some cats infected with feline leukemia virus (FeLV). (nih.gov)
  • The relationship between treatment outcome and location of cryptococcal infection, gender, magnitude of pretreatment cryptococcal antigen titers, results of feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV) serology, and serial changes in antigen titers during and after treatment were evaluated in a prospective and nonrandomized study of 35 cats with cryptococcosis. (unboundmedicine.com)
  • cats seropositive for FeLV or FIV had a higher likelihood of treatment failure (P = .008). (unboundmedicine.com)
  • Neither FeLV nor FIV can infect humans and HIV cannot infect cats. (animalcliniceast.com)
  • FIV is in the same retrovirus family as Feline leukemia virus (FeLV). (mongabay.com)
  • injection site tumours (sarcoma, most often due to feline leukemia virus and rabies vaccines). (yourvetonline.com)
  • In addition, we recommend testing all kittens for Feline Leukemia Virus (more on that later). (animalcliniceast.com)
  • Both Feline Leukemia Virus and Feline Immunodeficiency Virus are similar to HIV, the Human Immunodeficiency Virus which causes Acquired Immune Deficiency Syndrome (AIDS) in people. (animalcliniceast.com)
  • We recommend all kittens be tested for Feline Leukemia Virus within the first few months of life. (animalcliniceast.com)
  • We also encourage testing new adult cats introduced to a home for both Feline Leukemia Virus and Feline Immunodeficiency Virus. (animalcliniceast.com)
  • All kittens who may spend even a small amount of time outdoors should be vaccinated for Feline Leukemia. (animalcliniceast.com)
  • However, cats with FIV may have immune deficiencies that eventually make the cats vulnerable to the same secondary diseases that people with depressed immune systems can acquire (for example, chronic diarrhea or respiratory or skin problems that people with HIV/AIDS or individuals undergoing chemotherapy treatments can have). (chappellevet.ca)
  • Isolation is important to prevent a cat from transmitting FIV to other cats and to prevent the infected cat (with a weakened immune system) from contracting diseases from other cats in the neighborhood. (chappellevet.ca)
  • While most feline infectious diseases affect only cats, and most human infectious diseases affect only humans, it is important to be aware that some of these diseases-called zoonotic diseases-can be transmitted between cats and people. (snapcats.org)
  • Many zoonotic diseases can be transmitted from fleas or ticks (called vectors) to a person or a cat from another animal. (snapcats.org)
  • Fleas may also serve as vectors for cat-scratch and other zoonotic diseases. (snapcats.org)
  • Vaccination is one of the most effective ways you can protect your cat against infectious diseases. (yourvetonline.com)
  • The center is committed to improving the health of cats by developing methods to prevent or cure feline diseases and by providing continuing education to veterinarians and cat owners. (metrowesthumanesociety.org)
  • Many other diseases can show similar changes but suspicions of FIV may be raised if a cat doesn't respond as well as expected to treatment or has a recurring condition. (metrowesthumanesociety.org)
  • HIV-positive pregnant women can, as we have seen, transmit the infection to the unborn child, but antiretroviral therapy is able to reduce this risk;Prevent and treat venereal diseases, which are also a risk factor for acquired immunodeficiency infection. (aids2010.org)
  • FIV is similar to HIV (the human immunodeficiency virus) and causes a feline disease that is similar to AIDS (acquired immune deficiency syndrome). (homehealth-uk.com)
  • Although FIV is similar to human immunodeficiency virus (HIV) that causes acquired immune deficiency syndrome (AIDS) in people, FIV cannot be transmitted to people, and cats cannot carry HIV. (chappellevet.ca)
  • Those with immature or weakened immune systems, such as infants, individuals with acquired immunodeficiency syndrome (AIDS), the elderly, and people undergoing cancer therapy, are more susceptible to zoonotic infections than others. (snapcats.org)
  • As its name suggests, this is the cat equivalent of HIV, the cause of acquired immune deficiency syndrome (AIDS). (metrowesthumanesociety.org)
  • What is AIDS in cats (feline immunodeficiency syndrome)FIV (Feline Immunodeficiency), is a common disease of cats, similar to AIDS and for this reason defined, in fact, cat AIDS. (aids2010.org)
  • Let's get rid of this doubt immediately: cat "AIDS" has nothing to do with HIV infection in humans, which is transmitted sexually or through direct contact with infected (human) blood, and which above all has other pathogenic cause. (aids2010.org)
  • Cat AIDS can be kept under control but not treated, because there are no drug therapies capable of eradicating the virus once it has infected the animal. (aids2010.org)
  • There has been a great deal of evidence showing, if not direct causality, an undeniable close link between the presence of HIV and the syndrome AIDS. (documentaryheaven.com)
  • GAINESVILLE, Fla. - A University of Florida researcher has discovered an unexpected link between the viruses that cause feline and human AIDS: Cats vaccinated with an experimental strain of the human AIDS virus appear to be at least as well-protected against the feline version of the disease as those immunized with the vaccine currently used by veterinarians. (mongabay.com)
  • The surprise finding may mean cats with feline immunodeficiency virus, also known as FIV or feline AIDS, could eventually be treated even more effectively using some form of the experimental human vaccine. (mongabay.com)
  • Since its discovery in 1987, FIV infection of cats has been used in vaccine studies as a small-animal model of human AIDS. (mongabay.com)
  • To determine the extent to which the human and feline AIDS viruses react to each other, and any implications that might exist for vaccine efficacy, Yamamoto began experimenting with long-term, nonprogressive strains of FIV that led to the current commercial vaccine. (mongabay.com)
  • Therefore, protective vaccines based on cross-reactive regions of AIDS viruses can provide broad immunity, and may be useful against viruses that are currently evolving in a new host, such as HIV infection of humans," Yamamoto said. (mongabay.com)
  • The feline immunodeficiency virus (FIV) infection is a complex retrovirus that causes immunodeficiency disease in domestic cats. (homehealth-uk.com)
  • Image showing an adult cat with feline immunodeficiency FIV is a viral disease caused by a retrovirus that affects only felines (therefore cats, in particular stray but not, for example, dogs) and which is transmitted from infected person to person healthy mostly through scratching and biting, because the pathogen is contained in saliva and blood. (aids2010.org)
  • What is Feline Leukaemia Virus? (homehealth-uk.com)
  • Feline leukaemia virus was once a highly prevalent disease, which now, thanks to vaccination is a lot less common. (yourvetonline.com)
  • However, simple precautions, common sense, and good hygiene, including careful handling of litter boxes and treating cats with fleas and other parasites, can further reduce the risk of zoonotic disease. (snapcats.org)
  • Fleas may also play a role in the transmission of infection. (snapcats.org)
  • However, avoiding scratches and bites (for example, by not allowing children to play roughly with cats), controlling fleas, and keeping cats indoors all reduce the risk of cat-scratch disease. (snapcats.org)
  • Fleas are the most common external parasite of cats. (snapcats.org)
  • Flea-infested cats may become infected with tapeworms from fleas ingested while grooming. (snapcats.org)
  • Infected cats shed the virus in their urine, stool, nasal secretions and even their fleas can aid the transmission of the virus. (yourvetonline.com)
  • Fleas in Dogs and Cats Ctenocephalides felis (cat flea) on a severely flea-infested and anemic cat. (merckvetmanual.com)
  • Revolution and Frontline Plus are two excellent products used to kill fleas on kittens and adult cats. (animalcliniceast.com)
  • Feline panleukopenia (FPV) is a highly contagious viral disease of cats caused by the feline parvovirus. (yourvetonline.com)
  • Feline herpes virus, sometimes known as feline viral rhinotracheitis (F3 FVR) is a highly contagious disease that causes upper respiratory tract disease. (yourvetonline.com)
  • It is spread to susceptible cats that are in direct contact with an infected cat, or with inanimate objects (e.g., clothing, food and water dishes, furniture, toys) that have been contaminated with viral particles. (yourvetonline.com)
  • Because biting is the most efficient means of viral transmission, free-roaming, aggressive male cats are the most frequently infected, while cats housed exclusively indoors are much less likely to be infected. (mongabay.com)
  • Mucosal infection and vaccination against feline immunodeficiency virus. (nih.gov)
  • For example, previous vaccination for FIV can make the result of the test positive even in the absence of actual FIV infection. (chappellevet.ca)
  • Occasionally a cat may suffer from anaphylaxis that can occur up to 48 hours post-vaccination. (yourvetonline.com)
  • Unfortunately, there is no vaccination currently available for Feline Immunodeficiency Virus, although there is currently a great deal of research into transmission, prevention, treatment, and development of a vaccine for the virus. (animalcliniceast.com)
  • It can weaken a cat's immune system (immunosuppression) and make the cat susceptible to other infectious organisms such as bacteria, other viruses, yeast, fungi, etc. (secondary or "opportunistic" infections). (chappellevet.ca)
  • Like HIV, both viruses can be transmitted from mother cats to kittens. (animalcliniceast.com)
  • Species of the genus LENTIVIRUS, subgenus primate immunodeficiency viruses (IMMUNODEFICIENCY VIRUSES, PRIMATE), that induces acquired immunodeficiency syndrome in monkeys and apes (SAIDS). (lookformedical.com)
  • Proteins synthesized by HUMAN IMMUNODEFICIENCY VIRUSES such as the HIV-1 and HIV-2 . (lookformedical.com)
  • IMPORTANCE The efficiency of infection receptor use is the first step in determining the species tropism of viruses. (bvsalud.org)
  • On rare occasions infection is transmitted from an infected mother cat to her kittens, usually during passage through the birth canal or when the newborn kittens ingest infected milk. (homehealth-uk.com)
  • Kittens are much more susceptible to the virus, as are males and cats that have outdoor access. (homehealth-uk.com)
  • Russian Blue Kitten photograph by Sensual Shadows Photography Before you go in search of Russian Blue Kittens have a look at these and have a look at some Russian Blue adult cats too and read about this cat breed. (pictures-of-cats.org)
  • I've also built a page in which I discuss the breed standard in a general kind of way, nothing too technical, which may interest potential buyers of Russian Blue kittens as it also contains a large format slide show of a lot of cats of this breed to get a feel as to how they appear and what they should look like under the breed standard. (pictures-of-cats.org)
  • Similarly, kittens younger than 6 months can test positive not because they are infected, but because they acquired antibodies to the infection from their mother's milk. (chappellevet.ca)
  • Because most cases of cat-scratch disease result from contact with kittens, immunosuppressed people should avoid such contact. (snapcats.org)
  • Anti-parasite medications for kittens and annual fecal exams for adult cats can reduce environmental contamination and the risk of human infection. (snapcats.org)
  • Feline immunodeficiency virus (FIV) is a lentivirus that affects domesticated housecats worldwide. (mongabay.com)
  • You are much more likely to contract ailments from other humans than you are from your cat. (snapcats.org)
  • reducing the risk of transmission of disease between individual cats, and between cats and other animals including humans. (yourvetonline.com)
  • FIV is a cat-only disease and cannot be spread to humans or other non-felines. (metrowesthumanesociety.org)
  • FIV is a natural infection of domestic cats that results in an immunodeficiency syndrome resembling HIV infection in humans. (mongabay.com)
  • FIV and HIV are both lentiviruses, however, neither can infect the other's usual host: humans cannot be infected by FIV nor can cats be infected by HIV. (mongabay.com)
  • Due to high zoonotic potential and the risk of infection via shared marine food resources, these findings may also indicate potential health threats for other animals and humans. (frontiersin.org)
  • In intermediate hosts, T. gondii tachyzoites spread systemically, often causing subclinical infection in healthy animals and humans. (frontiersin.org)
  • Cat scratch disease (CSD), also known as cat scratch fever or subacute regional lymphadenitis, is a bacterial infection affecting lymph nodes that drain the sites of inoculation. (medscape.com)
  • This 9-year-old boy developed cat scratch disease (CSD) encephalitis and a papular pruritic dermatitis after sustaining cat scratches and developing regional lymphadenitis. (medscape.com)
  • This 2.5-year-old boy was recovering from cat scratch disease acquired 10 months before when he developed this neck abscess over a period of 3 weeks. (medscape.com)
  • Infection of immunocompromised patients with the same organism leads to a very different disease, bacillary angiomatosis-peliosis. (medscape.com)
  • however, any cat can acquire this disease. (chappellevet.ca)
  • The disease is also rarely transmitted from an infected mother cat to her nursing kitten in the milk. (chappellevet.ca)
  • Transmission of a zoonotic disease can potentially occur when a person comes into direct contact with secretions or excretions-such as saliva or feces-from an infected cat. (snapcats.org)
  • Additionally, a disease may be contracted through contact with water or food that has been contaminated by an infected cat. (snapcats.org)
  • Cat-scratch disease , also called bartonellosis , is by far the most common zoonotic disease associated with cats. (snapcats.org)
  • Cat-scratch disease can occur when a person is bitten or scratched by an infected cat. (snapcats.org)
  • People with cat-scratch disease usually have swollen lymph nodes, especially around the head, neck, and upper limbs. (snapcats.org)
  • Some healthy cats are continuously or intermittently infected with cat-scratch disease bacteria, but antibiotics do not reliably cure infection in these cats and are not currently recommended. (snapcats.org)
  • Salmonellosis , another common bacterial disease, can cause diarrhea, fever, and stomach pain beginning one to three days after infection. (snapcats.org)
  • Some feline intestinal parasites, including roundworms and hookworms, can also cause disease in people. (snapcats.org)
  • Vaccines are preparations that resemble infections but are not disease-causing. (yourvetonline.com)
  • For cats, keeping your cat inside rather than letting them roam outside will lower their risk of catching a disease from other cats. (yourvetonline.com)
  • Feline coronavirus is a cat-specific virus (it cannot cause disease in other animals and is NOT the same virus that causes human coronavirus Covid-19). (yourvetonline.com)
  • For some cats, the virus mutates (changes) and reacts with the cat's immune system to create a disease called FIP. (yourvetonline.com)
  • The chance that an FIV infected cat will pass the disease onto other cats within a household is less than 2% as long as there is no fighting or biting. (mongabay.com)
  • Keeping infected cats separated from disease free cats is the only sure way of preventing the spread of the disease. (mongabay.com)
  • However, unlike in domestic cats, the virus does not necessarily cause disease in these species, perhaps because these species have acquired, during evolution, mutations that confer resistance to it. (mongabay.com)
  • Her most recent studies have attempted to improve the efficacy of that vaccine by using strains of FIV found in cats in which the disease had not progressed for some reason over several years. (mongabay.com)
  • After the coronavirus disease 2019 pandemic, a number of SARS-CoV-2-related coronaviruses (SC2r-CoVs) were identified in Rhinolophus bats, and some of them can use human angiotensin converting enzyme 2 (ACE2) for the infection receptor without acquiring additional mutations. (bvsalud.org)
  • Most commonly, however, pyoderma refers to bacterial infections of the skin. (merckvetmanual.com)
  • However, the prognosis and life expectancy is significantly enhanced by regular Vet check-ups and careful health management of infected cats, so early diagnosis is vital. (homehealth-uk.com)
  • Surprisingly, there is no proven shortening of life expectancy with FIV cats, although you do need to keep on top of any infections it may pick up, as neglected illness will not help! (metrowesthumanesociety.org)
  • The life expectancy of the feline with full-blown FIV is about five years from diagnosis. (aids2010.org)
  • Whilst most infected cats do not show symptoms, they are prone to developing other infections and certain types of cancer. (homehealth-uk.com)
  • What are the symptoms of Feline Immunodeficiency Virus? (homehealth-uk.com)
  • An FIV-infected cat may not show any symptoms for years. (homehealth-uk.com)
  • Once symptoms do develop, however, they may continually progress, or a cat may show signs of sickness interspersed with health for years. (homehealth-uk.com)
  • This latent stage can last for many years before the cat shows any outward signs of illness (clinical signs or symptoms). (chappellevet.ca)
  • Symptoms, if they eventually occur, may include skin and ear infections, diarrhea, anemia (a decreased number of red blood cells), redness and inflammation of the gums causing decreased appetite and/or tooth loss, respiratory problems including pneumonia, abnormal urination, abnormal behavior such as roaming and confusion or dementia, and certain types of cancer. (chappellevet.ca)
  • The presence of such symptoms, particularly in cats that roam or have been strays in the past (and therefore may have been exposed through bites from other cats) leads a veterinarian to want to test a cat for FIV, to confirm or eliminate FIV as a cause of the symptoms. (chappellevet.ca)
  • FIV cats most often live long, healthy, and relatively normal lives with no symptoms at all. (metrowesthumanesociety.org)
  • What is Feline Immunodeficiency Virus? (homehealth-uk.com)
  • However, FIV is a highly species-specific virus that infects only felines. (homehealth-uk.com)
  • This virus infection is second only to trauma as the leading cause of death in cats, killing 85% of persistently infected felines within three years of diagnosis. (homehealth-uk.com)
  • The virus commonly causes anaemia or lymphoma, but because it suppresses the immune system, it can also predispose cats to deadly infections. (homehealth-uk.com)
  • The effects of Avemar treatment on feline immunodeficiency virus infected cell cultures. (nih.gov)
  • Antiviral treatment of feline immunodeficiency virus-infected cats with (R)-9-(2-phosphonylmethoxypropyl)-2,6-diaminopurine. (nih.gov)
  • Feline immunodeficiency virus neuropathogenesis: from cats to calcium. (nih.gov)
  • Vif of feline immunodeficiency virus from domestic cats protects against APOBEC3 restriction factors from many felids. (nih.gov)
  • Probing the interaction between feline immunodeficiency virus and CD134 by using the novel monoclonal antibody 7D6 and the CD134 (Ox40) ligand. (nih.gov)
  • Feline immunodeficiency virus infection: an overview. (nih.gov)
  • Feline immunodeficiency virus infection--causative agent of an acquired immunodeficiency syndrome in cats. (nih.gov)
  • Feline immunodeficiency virus (FIV) can cause an irreversible infection in cats. (chappellevet.ca)
  • Initially, for a few weeks after infection as the virus is spreading through the body, a cat may have a low-grade fever, enlarged lymph nodes, or other vague signs of illness that may never be detected. (chappellevet.ca)
  • Whilst most cats eliminate FCoV after infection, some will develop a persistent infection and continue to shed large amounts of the virus in their faeces, serving as a source of infection for other cats. (yourvetonline.com)
  • The virus is transmitted between cats via contact with a cat's infected saliva and urine either directly, or by touching shared food bowls and toys. (yourvetonline.com)
  • The Feline Immuno-deficiency Virus is a slow virus that affects a cat's immune system over a period of years. (metrowesthumanesociety.org)
  • FIV positive only means that your cat has been infected by the virus. (metrowesthumanesociety.org)
  • No. Although HIV is a similar virus, there is no risk of cross infection. (metrowesthumanesociety.org)
  • It's advisable to feed the positive cat from a separate food bowl as saliva can have large amounts of virus in it. (metrowesthumanesociety.org)
  • If this test is positive, it's likely that your cat is infected by the virus. (metrowesthumanesociety.org)
  • Some virus positive cats will not reveal a positive result on the usual blood test so we may have to have a more sophisticated test carried out. (metrowesthumanesociety.org)
  • As far as we know, once a cat is infected with the virus it will remain infected for the rest of its life, though it isn't clear if all infected cats will become ill. (metrowesthumanesociety.org)
  • Secondary infections can be effectively treated with antibiotics but no specific treatment for the virus exists. (metrowesthumanesociety.org)
  • External envelope protein of the human immunodeficiency virus which is encoded by the HIV env gene. (lookformedical.com)
  • Transmembrane envelope protein of the HUMAN IMMUNODEFICIENCY VIRUS which is encoded by the HIV env gene. (lookformedical.com)
  • FIV attacks the immune system of cats, much like the human immunodeficiency virus (HIV) attacks the immune system of human beings. (mongabay.com)
  • FIV can infect other feline species, and in fact in some large wild cat species, such as African lions, the virus is commonly present. (mongabay.com)
  • Common coronavirus infection of cats caused by the feline infectious peritonitis virus (CORONAVIRUS, FELINE). (bvsalud.org)
  • It affects all breeds, with males more likely to contract the infection than females, and it is usually seen between the ages of one to six years old. (homehealth-uk.com)
  • The unremitting emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants necessitates ongoing control measures. (bvsalud.org)
  • J Feline Med Surg 2022 Aug;24(8):e194-e202. (nih.gov)
  • It is recommended to keep infected cats indoors as much as possible, because they will be more vulnerable to contracting other infections due to their weakened immune systems. (homehealth-uk.com)
  • This is a relatively common infection in cats that mainly causes asymptomatic infections such as enteritis resulting in diarrhoea. (yourvetonline.com)
  • Infection occurs when a susceptible cat comes into contact with these infectious secretions. (yourvetonline.com)
  • Cats that have FIV must be kept indoors and isolated from other cats. (chappellevet.ca)
  • Feline infection can be prevented by keeping cats indoors and feeding them cooked or commercially processed food. (snapcats.org)
  • However, cats and other animals-even those that appear healthy-can carry and pass salmonella bacteria in their stool. (snapcats.org)
  • Salmonella bacteria are more commonly harbored by cats that feed on raw meat or wild birds and animals. (snapcats.org)
  • It is not FIV that causes the problems, but the secondary infections it may pick up. (metrowesthumanesociety.org)
  • A vigilant pet owner that treats any secondary infections can make the difference. (mongabay.com)
  • Yamamoto's team was also surprised to discover that a core protein found in HIV also effectively protects cats against FIV. (mongabay.com)
  • However, some people require medical attention because the diarrhea is severe or the infection is affecting other organs. (snapcats.org)
  • Human infection can be prevented by wearing gloves and washing hands thoroughly after cleaning litter boxes (especially if used by a cat with diarrhea). (snapcats.org)
  • While bacteriologic investigations yielded no clues, the physicians continued to observe similar cases of spontaneously remitting regional lymphadenitis associated with cat scratches in their pediatric population. (medscape.com)
  • however, the oculoglandular syndrome of conjunctivitis with an enlarged preauricular lymph node that he reported ultimately was shown to comprise only a small subset of the possible clinical presentations of CSD, the result of inoculation of the CSD agent into the conjunctivae. (medscape.com)
  • Clinical aspects of feline retroviruses: a review. (nih.gov)
  • Pretreatment mean log titers for serum cryptococcal antigen were not influenced by location of the infection. (unboundmedicine.com)
  • Treatment outcome was not influenced by gender, location of the infection, or magnitude of pretreatment serum antigen titer. (unboundmedicine.com)
  • Yamamoto holds the patent on the only approved vaccine available through veterinarians to protect cats against FIV. (mongabay.com)
  • A cat scratch antigen skin test was positive with 15-mm induration. (medscape.com)
  • 9). For cats in which treatment was successful, antigen titers decreased significantly from pretreatment values by 1.3 orders of magnitude at 2 months after initiation of treatment. (unboundmedicine.com)
  • In contrast, in 5 of 6 cats in which treatment failed, antigen titers were unchanged or increased in magnitude even after at least 6 months of treatment. (unboundmedicine.com)
  • From personal experience over decades the best odor control cat litter is wood based. (pictures-of-cats.org)
  • For me there are essential 2 types of cat litter: clay or earth based (Fullers Earth - see history of cat litter ) wood based I presume the wood based litter is made from wood chippings. (pictures-of-cats.org)
  • Patients with CSD usually have a history of sustaining a scratch or bite from a cat (typically a kitten). (medscape.com)
  • FIV is spread from cat to cat, primarily through bite wounds from infected cats. (chappellevet.ca)
  • Cats which are known fighters, such as those with a history of cat bite abscesses, have a higher risk of being FIV positive. (metrowesthumanesociety.org)
  • Other cats should not be brought into the household and exposed to this cat (to prevent spreading of FIV), especially if the FIV-positive cat is resentful or aggressive toward other cat(s). (chappellevet.ca)
  • All cats are at risk, but in particular those that can easily be attacked by wild or stray cats (especially if males are not neutered, and therefore aggressive), in urban areas or in rural areas. (aids2010.org)
  • It is important to discuss with a vet your cat's individual circumstances to determine what vaccine schedule will suit your cat best. (yourvetonline.com)
  • Thankfully, very few cats suffer from vaccine side effects. (yourvetonline.com)
  • If your cat has experienced an adverse reaction to a vaccine in the past, your vet may recommend that your cat either not receive that vaccine (unless it is a legal requirement) or recommend that they receive medications to reduce the potential to react and keep your pet in for observation. (yourvetonline.com)