vacunas

Pfizer-BioNTech and Moderna's vaccines create a sustained immune response in the body that can protect against the coronavirus for years, a group of scientists reported Monday.The results add to growing evidence that most people immunized…

The protection of less effective vaccines against COVID-19 can wear off faster. The Sinopharm vaccine may already show signs of this decline. Clinical studies show it is 78 percent effective, but the United Arab Emirates and Bahrain are…

Mark Lewis was dying to find monkeys. Millions of lives were at risk around the world.Lewis, CEO of Bioqual, was responsible for supplying the lab overalls to pharmaceutical companies like Moderna and Johnson & Johnson that animals…