The Centers for Disease Control (CDC, for its acronym in English) of the United States endorsed this Tuesday the use in adults of the Novavax covid-19 vaccine, which becomes the fourth serum of this type to be approved in the country.
The director of the CDC, Rochelle P. Walensky, indicated in a statement that the Novavax vaccine is “safe and effective” and encouraged those who have been waiting to be vaccinated with a serum that uses a different technology to get it. to those available so far.
“With COVID-19 cases on the rise in various parts of the country, vaccination is crucial to help protect against the complications of severe COVID-19 illness,” Walensky said.
Novavax’s vaccine will be available for injection in US hospitals and pharmacies within weeks.
The whey contains the spike protein from the SARS-CoV-2 virus, which causes covid-19, and an adjuvant, which is a substance that helps strengthen the immune response to an antigen.
In this type of vaccine, when a person receives the injection, their immune system identifies the inactivated virus as “foreign” and produces antibodies against it, preparing it for future contact with the coronavirus.
In the case of Novavax, the Matrix-M adjuvant has been used, which has saponin extracts from the bark of the Soapbark tree, which is native to Chile.
To evaluate the vaccine, a clinical trial was carried out in the US and Mexico before the appearance of the delta and omicron variants and in which the serum demonstrated efficacy in preventing covid-19 in the 1990s. 4 %.
That trial involved 17,200 volunteers who received the vaccine and 8,300 who were given a saline placebo.
In tests on the safety of the Novavax serum, the most common side effects were found to be pain and tenderness; redness and swelling at the injection site; fatigue; muscle, headache, and joint pain; nausea and fever.
The endorsement comes at a time when the US authorities are calling on citizens to get vaccinated and receive booster doses in the face of a rebound in cases due to the expansion of the subvariants of omicron BA.4 and BA.5.
Before Novavax, the US had already endorsed covid vaccines from Pfizer/BioNTec, Moderna and Johnson & Johnson. (YO)
Source: Eluniverso
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