The Oswaldo Cruz Foundation (Fiocruz) started a study to identify the number of new and old cases of zika, dengue and chikungunya in different socio-economic levels and age groups in Recife. In the visits to households chosen by lot, a questionnaire will be used to collect socio-demographic data and the history of disease by arboviruses. The teams will also collect blood samples for serological and molecular testing.
In the case of people with symptoms of one of the diseases at the time of team visit or having experienced the symptoms of the last 30 days, urine, saliva and hair samples will also be collected for more specific tests. "The goal is to try to clarify whether environmental factors may interact with the Zika virus and that there are cases of microcephaly," reported Fiocruz. All collected material is sent to the Virology and Experimental Therapy department in Pernambuco.
Home visits take place according to the foundation from 5 pm to 9 pm from Monday to Thursday and from 9 am to 12 noon on Saturday when most family members are at home. All participants will receive test results and guidelines about them. Patients who are symptomatic are referred for care in the GGD network.
A total of 990 houses must be visited and samples taken of about 3,105 people aged between 5 and 65 years.
"With this study it will be possible to know the dimension of the zika and chikungunya epidemics and to evaluate the current dengue situation in Recife." Zika and chikungunya are confused with dengue because they have similar symptoms and there are many asymptomatic cases. , which leads to underreporting ", said research coordinator Cynthia Braga.
One of the research proposals, she said, is to help identify which population is most vulnerable to Zika and the number of women of childbearing age who have no immunity to the virus yet. Risk factors associated with the three arboviruses and the most affected areas are also known.
The research will be developed with financial support from the Ministry of Health, the Pan American Health Organization and the international consortium Zikalliance.
edition: Lílian Beraldo