<prompt> Adies aegpti index at airport -0112-Jan  <response>: C 1 258 - Park 22ndAEDES AEGYPTI INDEX: This is a house index and is defined as the percentage of houses and their premises in a limited well-defined area, showing actual breading of Aedes - aegypti larvae This index should not be more than 1 percent in towns and seaports in endemic areas to ensure freedom from yellow fever. Airports and seaports are kept free from the breeding of insect vectors over an area extending at least 400 meters around their perimeters. The aedes aegypti index is kept below 1 YELLOW - FEVER It is a exotic zoonotic disease in India. Causative agent - Group B Arbovirus Flavivirus fibricus Togavirus family Reservoir - Monkey in forest areas and Man in urban area. Vector - Aedes aegypti Incubation Period - Intrinsic 3-6 days, Extrinsic 8-12 days. Immunity - One attack confers life long Immunity. Infants bom of immune mothers have antibodies up to 6 months of life. Clinical features - Haemorrhagic fever black vomit, epistaxis, malena with severe hepatic and renal manifestations. Spectrum of disease varies from clinically indeterminate to severe cases. Case fatality rate - May reach 80 in severe cases. Period of communicability: Blood of patients is infective during the first 3 to 4 days of illness. Vaccine - 17 D vaccine Live attenuaed, Freeze dried. Immunity apperrs on 7th day and lasts 35 years. Rapid immunization of population at risk is the most effective control strategy. International certificate of vaccination - Valid 10 days after date of vaccination and extends up to 10 years. WHO recommends re-vaccination after 10 years. All travellers including infants exposed to risk of yellow fever or passing through endemic zones of yellow fever must poses a valid International certificate of vaccination. Quarantine - A traveller without a valid international certificate of vaccination is placed on quarantine in a mosquito proof ward for 6 days. 