The internal CDC document said the Delta variant was more transmissible than the viruses that cause MERS, SARS, Ebola, and the seasonal flu.

Covid-19 cases in the country are on the rise again. While infections had seen a drop in May with the infection rate coming down to 7.91 percent on the 29th of that month, the infection rates are back ...

Rich countries are opening up societies and vaccinating young people who are not at great risk from Covid-19, while the poorest countries cruelly lack doses, the World Health Organization said on ...

COVID-19 vaccination before or during pregnancy was linked to lower risk for severe maternal disease in the delta or omicron variant periods, ...