The National Health Surveillance Agency (Anvisa) proposed suspending the application of vaccines against AstraZeneca and Janssen’s covid-19 in pregnant women. The recommendation applies to immunizers that use an adenoviral vector. Thus, Brazilian pregnant women should receive doses from Pfizer or Coronavac. In May, the agency had already recommended suspending the use of AstraZeneca in this group. In a statement released last Friday, 2nd, the agency expanded the guidance to the Janssen vaccine, which arrived in the country at the end of June.
Last April, pregnant women were included in the priority list for vaccination against covid-19 because they are part of the risk group. A bulletin from the Covid-19 Observatory of the Oswaldo Cruz Foundation (Fiocruz) released at the end of June points out that the fatality rate among these women is very high, at 7.2%, more than double the rate in the country (2.8% ). Until last month, 1,156 pregnant women had died of covid-19 in 2021 alone. In 2020, there were 560 deaths in this group.
In communiqué 006/2021, signed by the General Management for Monitoring Products Subject to Health Surveillance (GGMON), the agency reaffirms that the general public must continue taking these vaccines because their benefits are much greater than the risks associated with infection by Covid-19. “Anvisa reinforces the favorable benefit-risk ratio of vaccines against Covid-19 authorized for use in the country, and it is essential to continue immunizing the population,” he said in a statement.
Anvisa also advises on the need to institute measures to identify suspected cases of thrombocytopenia in people who received the vaccines. The chances of this happening are extremely low, between 0.1% and 0.5%. A study at the University of Oxford has already shown that the risk of patients diagnosed with covid-19 having cases of thrombosis is about ten times higher than among people vaccinated.
According to the agency, symptoms related to thrombosis are shortness of breath, chest pain, swelling or pain in the legs, persistent abdominal pain, neurological symptoms including severe and persistent headaches, blurred vision, confusion, seizures, petechiae (small spots red or brown in parts of the body), bruises or other hemorrhagic manifestations outside the vaccination site. Vaccinated people who present these signs should seek a health service.
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