Short term, relative effectiveness of four doses versus three doses of BNT162b2 vaccine in people aged 60 years and older in Israel: retrospective, test negative, case-control study.

Authors :: Gazit, Sivan
Saciuk, Yaki
Perez, Galit
Peretz, Asaf
Pitzer, Virginia E.
Patalon, Tal
Source :: BMJ: British Medical Journal; 6/18/2022, Vol. 377 Issue 8341, p1-9, 9p
Publication Year :: 2022

Subjects :: COVID-19
CONFIDENCE intervals
IMMUNIZATION
COVID-19 vaccines
RETROSPECTIVE studies
CASE-control method
VACCINE effectiveness
DESCRIPTIVE statistics
COVID-19 testing
POLYMERASE chain reaction
COVID-19 pandemic
EVALUATION

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