Fiocruz study will analyze the effectiveness of mass vaccination in the favelas of Maré, in Rio – Prime Time Zone


The aim is to vaccinate the entire adult population at the site with the first dose of AstraZeneca between 29 July and 1 August

EFE / EPA / JUNG YEON-JE / ArchiveFiocruz should be allowed to produce supplies for the Oxford vaccine in the country this month; the forecast is to provide around 200 million doses to the Ministry of Health starting in October

The Oswaldo Cruz Foundation (Fiocruz), in partnership with the Municipal Health Department of Rio, will carry out a study to analyze the effectiveness of mass vaccination against the Covid-19 in Complexo da Maré, the largest group of favelas in the Rio de Janeiro. The objective is to vaccinate the entire adult population of the place with the first dose of AstraZeneca between July 29th and August 1st. Currently, around 140,000 people live in Maré. Some of them have already been vaccinated, covered by the City Hall’s immunization schedule. The study will identify symptomatic coronavirus cases with the RT-PCR test and cross-check the vaccination status. Thus, it will be possible to analyze the effectiveness of the vaccine taking into account criteria of age, sex, type of immunizing agent, time of infection after vaccination, occurrence of serious cases and prevention of deaths. “Looking at the impact of vaccination on a large community would be unprecedented. Now to think that this will be carried out in Maré, which has a population size greater than 96% of the country’s municipalities, is something unique, which will allow us to map it with unique characteristics. Aspects of the disease itself, such as the dynamics of virus transmission in the territory, surveillance of its variants and monitoring of possible adverse effects of vaccines will be other points covered by the study, in addition to the effectiveness of the vaccine, which is the main focus.” , says the coordinator of the study, Fernando Bozza. In addition, Fiocruz will accompany 2,000 families living in Maré for six months, in order to map the transmission of the virus in a family environment. At this stage, data will be collected to conclude whether, when vaccinating adults, children are also protected. “One of the objectives of the study is to understand the dynamics of transmission and the indirect protection that this group can acquire once the family is immunized. We want to understand if mass vaccination of the adult population inhibits the circulation of the virus in a way that also protects children and adolescents”, explained Bozza.