What care should be taken who received the first dose of the anticovid vaccine and becomes infected with SARS-CoV-2 | Health | Magazine

It is essential to maintain sanitary biosecurity measures.

The main objectives of the vaccines available against SARS-CoV-2 are to reduce the cases of severe infection and mortality from COVID-19, although –according to studies – some like Pfizer They have also shown more or less effectiveness in reducing infections caused by the coronavirus.

In any case, none of the vaccines has proven to be 100% effective when it comes to curbing infections or preventing the transmission of SARS-CoV-2. The place Medical Writing highlights that AstraZeneca confers greater efficacy in the first dose compared to that offered by Pfizer or Moderna, whose protection increases when the two doses are completed.

Optimal protection for two-dose vaccines is obtained 7 to 28 days after the second is given. Therefore, it is possible that contagion occurs after the first dose, in the period between the first and the second (Pfizer, 21 days; Sinovac, 28 days; Moderna, 28 days; AstraZeneca, up to 12 weeks).

For this reason, it is essential to maintain sanitary biosecurity measures, such as the mandatory use of a mask, physical distance, hand washing with soap and water or disinfection with alcohol (at least 70%) and avoid, above all, the exposure to aerosols and confined spaces. These precautions should be followed even if both doses have been completed, as 75% of the target population has not yet been immunized to achieve herd immunity.

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“If you become infected a few days after receiving the first dose, the immune system will develop a response, even if it is not completely complete,” estimates Carmen de Mendoza, researcher in the area of ​​Health Sciences at the International University of La Rioja (UNIR). “The degree of protection of the first dose is variable in each person”, adds De Mendoza to the portal SINC.

The University of Utah health portal indicates that if a person becomes infected with SARS-CoV-2 between doses in the case of the Pfizer / BioNTech or Moderna vaccines, they will have to wait until the isolation ends (ten days for people with or without symptoms) and wait until you have no symptoms (three days without symptoms) before accessing the second dose.

While the Ministry of Health of Spain details that those cases of COVID-19 that are confirmed after the first dose of Pfizer / BioNTech, Moderna or AstraZeneca:

• If you are a person over 65 years of age: you will wait for the recovery and the end of the isolation period and the second dose will be administered, provided that at least the established period between doses has passed.
• If it is a person 65 years of age or younger: it will wait 6 months to complete the vaccination schedule with the administration of the second dose. (I)

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