Early summer is considered the period of greatest risk of transmission of yellow fever. Therefore, residents who live in risky places should seek vaccination as soon as possible.
The Ministry of Health made this warning because newly affected areas and large populations, such as the metropolitan areas of Rio de Janeiro, Minas Gerais and São Paulo, still had high numbers of people who were not vaccinated against fever. yellow and therefore increases the risk of infection.
In 2017, when there was an outbreak of yellow fever, vaccination was expanded to 4,469 municipalities. This is due to the entry of 940 cities located near the capital and the metropolitan area of the Southeast and South regions of the country, where there is evidence of viral circulation. Vaccination coverage must be at least 95% of the population.
In the National Vaccination Calendar, yellow fever vaccines are offered and distributed to the state every month, and this year 30 million doses of the vaccine against the disease have been sent throughout the country. However, vaccination is little sought by residents. People must take doses at least 10 days before going to the risk area.
What is yellow fever?
Yellow fever is an infectious disease caused by a virus and is transmitted by mosquitoes. Infection can be categorized in two ways: urban yellow fever, when transmitted by Aedes aegypti, or wild yellow fever, when transmitted by Haemagogus and Sabethe.
This disease is considered acute and hemorrhagic and is named because it causes yellowing of the body (jaundice) and bleeding to various degrees. This virus is tropical and is most common in South America and Africa. Even though it is considered a dangerous virus, most people have no symptoms and evolve to be cured.
Yellow fever belongs to the classification of arbovirus, with some differences between the dengue virus and Zika, even though they belong to the Flavivirus family. Learn more about yellow fever.