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Or was it a laboratory working with the coronavirus with poor containment or poor practices with how they were handling the virus that a lab worker or workers got sick and that's how it entered the human population or as dr. redfield offered, and i think this was extraordinarily unlikely or that the lab manipulated the virus to make it more likely to make it contagious. i don't think that's it. the way to know is to go there, sequence these early viruses and see how things went from bats to humans and within an intermediate host and i just wish china was more transparent about this. >> it allo...

This, and they say this saa a complete lie. wolf? >> david culver reporting from shanghai in china. thank you very much. let's discuss this and more with dr. paul offit director of children's hospital and he's a member of the fda vaccines advisory. thanks, as usual, for joining us. tell our viewers why it is so critically important for all of us to understand the origin of this deadly -- this deadly virus. >> right. there's still a lot we don't know and the more we know that will help us in the future when the next pandemic arrives. what is clear is this is a bad coronavirus that has made its ...

The Atlantic Coronavirus Reinfection Will Soon Become Our Reality The virus can take many paths to reinvading a person’s body. Most of them shouldn’t scare us. On its face, reinfection appears to be a straightforward term. It is literally “infection, again”—a recovered person’s second dalliance with the same microbe. Long written into the scientific literature of infectious disease, it is a familiar word, innocuous enough: a microbial echo, an immunological encore act. But thanks to the pandemic, reinfection has become a semantic and scientific mess. Newly saddled with the baggag...

The virus which causes Covid-19 is “extremely unlikely” to have entered the human population as a result of a laboratory-related incident, global health leaders have said. Sars-CoV-2 “may have originated from zoonotic transmission”, meaning it passed from animals to humans, a team of experts from China and the World Health Organisation (WHO) concluded. Experts said the early findings indicate that the virus was introduced to humans through an “intermediary host”, which means it jumps from one species to another, and then jumps from the second species t...

Date Time Malaria Threw Human Evolution Into Overdrive on This African Archipelago In the last 500 years, the people of Cabo Verde have evolved at a breakneck pace — thanks to a genetic variant, inherited from their African ancestors, that protects against the ravages of malaria. Credit: F. Mira DURHAM, N.C. — Malaria is an ancient scourge, but it’s still leaving its mark on the human genome. And now, researchers have uncovered recent traces of adaptation to malaria in the DNA of people from Cabo Verde, an island nation off the African coast...