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Butantan plans delivery of first batch of influenza vaccines with Darwin strain

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O Butantan Institute announced the anticipation of the delivery of flu vaccines for the 2022 vaccination campaign, with the shipment of the first batch of 2 million doses to the National Vaccination Program.

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According to the institute, the delivery took place last Friday (25), ahead of schedule – for the month of March – after the data obtained on the new strains had been sent and approved by the National Surveillance Agency. sanitary (Anvisa), which is the biggest anticipation in the history of the country’s anti-influenza campaigns.

In the formulation of the vaccines, protection against the Darwin strain was included, which caused flu epidemics in several regions of Brazil.

According to Butantan flu vaccine production manager Douglas Gonçalves de Macedo, the anticipation was possible because the documentation was sent to the regulatory body on February 18, ahead of schedule, and received a response from Anvisa also quickly.

“We have sent a file with all the documentation for submission and verification by Anvisa and we have had their comments with approval, which allows us to start partial deliveries”.

According to Douglas, the institute is working to deliver 80 million doses for the flu vaccination campaign by April.

“The vaccine is 100% national, entirely manufactured here in Butantan. As a result, we have the capacity to make two major deliveries, 40 million by the end of March and the remaining 40 by the end of April, but we are also trying to anticipate this. said Douglas.

The Butantan flu vaccine that will be distributed in the Unified Health System (USS) is trivalent, consisting of the H1N1Strain B It’s the H3N2of the Darwin subtype, which caused the localized outbreaks late last year.

As the disease is seasonal, the immunizing agent is changed each year, based on the three influenza virus subtypes that circulated the most in the southern hemisphere last year monitored and reported by the World Health Organization. health (WHO). Vaccines are updated and used in annual vaccination campaigns – usually conducted before winter, when flu cases increase.





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