The first confirmed case of coronavirus reinfection in the US has cast doubts about “herd immunity” from the virus and worried scientists because the 25-year-old Nevada man who contracted the virus became more seriously ill following the second infection. Senior…

A solution to stop this pandemic is that everyone is revaccinated with childhood schemes, and mixed with other vaccines such as influenza and yellow fever, this will strengthen the body’s defenses, all the immunology device will be reactivated the immune…