BREAKING: Pfizer says trials suggest its Covid vaccine works against South African variant, is safe and effective after 6 months

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Apr 01, 2021 BREAKING: Pfizer says trials suggest its Covid vaccine works against South African variant, is safe and effective after 6 months Pfizer and BioNTech said Thursday that trials suggest their vaccine is effective against a coronavirus variant that first emerged in South Africa, which some experts worry might evade existing shots.   The drugmakers also said in a statement that 12,000 people involved in their Phase 3 trial experienced high levels of protection against Covid-19 six months after their second dose, with no serious safety concerns. Read More Get the NBC News Mobile App Follow NBC News Check out all of NBCNEWS Newsletters here. Update Preferences | Unsubscribe | Contact | Privacy Update Preferences Unsubscribe Contact Privacy