Pope Francis and Pope Emeritus Benedict XVI have already received the first dose of the vaccine against covid-19.
The immunity of patients who have been infected with coronavirus can last for about five months, according to a new study from Public Health England.
Two WHO members were unable to enter China after testing positive for COVID-19.
Africa has secured 270 million doses of coronavirus vaccines, and at least 50 million of them will be available between April and June 2021. In Venice, a control tower tracks the movements of tourists.