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  • illness
  • As of January 11, 2013, 24 states and New York City were reporting high levels of influenza-like illness, 16 states were reporting moderate levels, five states were reporting low levels, and one state was reporting minimal levels ( 3 ). (cdc.gov)
  • The proportion of visits to health-care providers for influenza-like illness (ILI), as reported in the U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet), was among the highest since ILI surveillance began in 1997 in its current form. (cdc.gov)
  • vaccination
  • In the United States, annual vaccination against seasonal influenza is recommended for all persons aged ≥6 months ( 1 ). (cdc.gov)
  • CDC and the Advisory Committee on Immunization Practices routinely recommend that annual influenza vaccination efforts continue as long as influenza viruses are circulating ( 1 ). (cdc.gov)
  • Because date and type of vaccination were not available for this early estimate, participants were considered vaccinated if they reported having received at least 1 dose of any 2012-13 influenza vaccine before enrollment. (cdc.gov)
  • The 2012-13 seasonal influenza vaccination rate among influenza cases was 32%, compared with 56% among influenza-negative controls. (cdc.gov)