Covid-19 | OMS afirma que o segundo reforço de vacina pode ser benéfico em grupos de alto risco, mas tem um impacto “mínimo” para outros grupos.

Covid-19: Second boosters may benefit at-risk groups but have “minimal” impact for others, says WHO – The BMJ

Diretriz original: Interim statement on the use of additional booster doses of Emergency Use Listed mRNA vaccines against COVID-19 – World Health Organization

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COVID-19: Joint statement from ECDC and EMA on the administration of a fourth dose of mRNA vaccines –
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Coronavirus (COVID-19) Update: FDA Authorizes Second Booster Dose of Two COVID-19 Vaccines for Older and Immunocompromised Individuals – U.S. Food & Drug Administration