Agricultural Workers' DiseasesAgricultureMicrobiologyPesticidesOccupational ExposureOrganophosphate PoisoningGas PoisoningTransients and MigrantsPhosmetDustCentral AmericaAccidents, OccupationalChlorpyrifosOccupational DiseasesButyrylcholinesteraseOccupational HealthAir Pollutants, OccupationalPesticide ResiduesOccupationsPolandAcetylcholinesteraseCarbamatesCholinesterase InhibitorsInsecticidesIndiaMicrobiological TechniquesOrganophosphorus CompoundsRural PopulationRisk FactorsBacteriologyQuestionnairesLaboratories, HospitalLaboratoriesBacteriaBacteriological TechniquesWorkers' CompensationSex Workers