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The study included determining the extent of the effect of common vaccines for the Corona virus (COVID-19). Based on some blood tests of people not previously infected with the virus. From vaccinated and not vaccinated with Corona virus (COVID-19) vaccines, and of both sexes, a total number of 280 people. 70 samples of Pfizer vaccine, 70 Sinopharm, and 70 AstraZeneca. In addition to 70 samples for the control group for ages between (18-70) years, during the period from October 2021 to the enddoi:10.53730/ijhs.v6ns3.7480 fatcat:jyl6hmcoqnaebnpja2bnirnvfi