There are now more than 150 vaccine development efforts worldwide.
Cells from African green monkeys. Killed viruses. Spike proteins. People turned into factories.Making a vaccine against the coronavirus that causes COVID-19 involves a variety of technologies and approaches. vaccine development efforts worldwide. Eleven already are being tested in people,Because it's unclear which technology will be the best, scientists need to"hedge their bets," and work on all of them simultaneously, said Dr.
They also built on existing technologies wherever possible, using African green monkey cells, for instance, because viruses reproduce efficiently in them and they are well-tested. "We must make sure that in speeding the vaccine development that we do not cut corners in safety and efficacy," Hatchett said.
One dose of the MMR vaccine is 93% effective against measles, 78% effective against mumps, and 97% effective against rubella,. A second dose boosts the effectiveness to 97% against measles and 88% against mumps. Chinese researchers working on a vaccine against SARS-CoV-2, which has a similar surface protein, have learned this lesson, Offit said. They used something other than formaldehyde to kill the virus used in their candidate vaccine. Protein-based vaccines include ones that prevent shingles, hepatitis B and human papillomavirus. In SARS-CoV-2, a protein-based vaccine would be designed to produce – and get the body to recognize – the spike protein.
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