A booster dose of the covid-19 vaccine developed by the Pfizer/BioNTech alliance is effective at 95.6% against symptomatic forms of the disease, according to a study conducted by the two laboratories
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National Institute of Health conducts clinical trials to evaluate vaccine effectiveness
The National Institute of Health, in partnership with the International Vaccine Institute, will conduct clinical trials starting in September to evaluate the efficacy of the Verocell vaccine against the new covid-19 variants