Therefore, humans, livestock and birds are not infected by direct contact with each other. There are three possible transmission routes for West Nile virus to invade Taiwan, namely: Migratory birds: In winter, there are migratory birds from Siberia to escape the winter, and in summer, there are migratory birds from India to escape the summer heat. Both Siberia and India are endemic areas of West Nile virus. When the birds that are carriers are only bitten by local mosquitoes After that, it may be transmitted to other local animals or humans.
Smuggled and imported animals telemarketing list without quarantine: Birds and horses with viruses, if they enter Taiwan through illegal channels, are likely to be transmitted to local animals or humans through mosquito bites. Vector mosquitoes: The infected vector mosquitoes may also fly into the cabins of ships, aircraft, etc. and enter Taiwan, and then infect local animals or humans through mosquito bites. (Extended reading: CDC appeals: 4 tricks to prevent the spread of Qukung’s disease ) West Nile virus incubation period and symptoms.
According to statistics from the United States, after being bitten by pathogenic mosquitoes, usually about 80% of infected people will not have any symptoms, and symptoms may appear after 3 to 14 days. However, symptoms can be mild or severe: about 20% of people experience mild symptoms, including fever, headache, vomiting , diarrhea, body aches or fatigue, and itchy skin. In addition, about less than 1% of infected people will affect the central nervous system, symptoms include high fever, headache, neck stiffness, confusion, coma, tremors, convulsions , muscle weakness, respiratory failure, numbness, paralysis, encephalitis (Encephalitis) ) or meningitis, which may require hospitalization in severe cases.