COVID-19

Current search: firm strain

@theguardian.com 4 years ago

Moderna begins work on booster to protect against South African variant

@aljazeera.com 4 years ago

Moderna says COVID vaccine works against coronavirus variants

@rt.com 4 years ago

Moderna working on new Covid-19 vaccine booster to tackle South Africa strain

@rt.com 4 years ago

Mutation-beating vaccine can be ready in 6 weeks says BioNTech, but confident existing Pfizer jab works against new Covid strain