Manaus/AM – The municipality of Barcelos, in Amazonas, is the one that recorded the highest number of malaria cases in the country in 2021, with 10,433 cases. Three other Amazonian municipalities, São Gabriel da Cachoeira, with 9,427 cases, Manaus, with 4,465 occurrences and Tefé, with 3,374 cases, all in 2021, are among the 10 in the country in cases of the disease, according to the Ministry of Health (MS). ).
Even with the 15.40% reduction in the record number of cases last year, compared to 2020, Manaus still leads the national scene in malaria cases. With the reduction, the capital fell from 7th to 9th place in the ranking of the ten Brazilian municipalities with the highest number of cases of the disease in the country.
Data from the Malaria Epidemiological Surveillance Information System (Sivep Malaria) show the 10 municipalities with the highest number of cases of the disease: Barcelos (AM), with 10,433 records, followed by Alto Alegre (RR), with 10,024 occurrences; São Gabriel da Cachoeira (AM), with 9,427 cases; Porto Velho (RO) with 7,717 records; Jacareacanga (PA), with 7,456 occurrences; Itaituba (Pennsylvania), with 4,992; Amajari (RR), with 4,505 cases; Cruzeiro do Sul (AC), with 4,488 registrations; Manaus (AM), with 4,465 occurrences; and the municipality of Tefé (AM), with 3,374 cases.
The Municipal Secretary of Health of Manaus, Shádia Fraxe, explained that the reduction in cases in the capital is the result of continuous work in the municipal health network, carried out by endemic disease control agents, who have a fundamental role in disease control.
Since 2018, according to the head of the Semsa Malaria Control Center, João Altecir Nepomuceno da Silva, the municipality of Manaus has shown a continuous reduction in cases of the disease. That year, 8,347 incidents were recorded. Following the historic series of cases, Manaus recorded 6,530 occurrences in 2019, 5,277 in 2020 and 4,464 in 2021.
In total, between 2017 and 2021, Manaus recorded a 57.7% reduction in malaria cases. 10,557 cases of malaria were reported in 2017 compared to 4,464 in 2021, João Altecir reported.
The reduction and improvement in the ranking of municipalities with more cases represents an achievement for the disease control program, especially since Manaus is an endemic area and has a much larger population, compared to other municipalities where the active transmission of malaria, with more than two million inhabitants, underlined the head of the Center for the Fight against Malaria.
Another important data, according to João Altecir, is what shows Manaus as the only one, among the ten municipalities with the highest number of cases, that has not registered, in 2021, the local transmission caused by the parasite Plasmodium falciparum, which is one of the species of protozoan transmitted to humans by the bite of mosquitoes of the genus Anopheles, causing malaria.
“Plasmodium falciparum is the most aggressive agent that causes disease and is responsible for malaria deaths. Controlling this transmission is one of the objectives set by the National Program for the Fight against Malaria. In Manaus it is a constant challenge, since the capital of Amazonas experiences epidemiological pressure from other municipalities that register the transmission of Plasmodium falciparum, being a point of passage, mobility and great circulation of people”, a- he explained.