What happens when flu meets Covid-19?

The real unknown is what Covid-19 does around other viruses. Every autumn there is a predictable series of outbreaks of respiratory viruses. It starts with rhinovirus, the main cause of the common cold, which breaks out every September as young children go to school and swap mucus. As no parent needs to be told, children are to sniffles what mosquitoes are to malaria.

The next COVID-19 challenge: Convincing people to get flu shots

Public health officials, doctors and pharmacists who have struggled for decades to convince Americans to get the flu shot are warning it is now more important than ever to get vaccinated as the U.S. faces a potential second wave of COVID-19 in the fall.