Iniciar sessão
APEP
Memory T cells induced by previous pathogens can shape the suspectibillity to, and clinical severity of, subsequent infections.
Despite vairious levels of preventive measures, in 2020 many countries have suffered severely from coronavirus 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus.
World Health Organization
These FAQs accompany WHO’s Guiding principles for immunization activities during the COVID-19 pandemic. As the COVID-19 pandemic evolves, these FAQ will be revised as necessary.