Pfizer/BioNTech COVID-19 vaccine offers decreased protection six months after second dose, suggests Israeli study
As of August 6, 2021, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is the virus responsible for the coronavirus disease 2019 (COVID-19), has infected over 201 million people and caused the deaths of almost 4.3 million worldwide. The high transmissibility and unpredictable nature of SARS-CoV-2 has supported the rapid development of several COVID-19…
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