Doctors warn the next flu pandemic will be severe

Health officials are warning a flu pandemic could be coming.
Researchers at The National Academy of Medicine say a flu pandemic could be worse than COVID-19.
According to researchers, COVID-19 has killed about 5 million people around the world, but the next flu pandemic could kill 33 million.
The researchers recommend countries to start developing next generation vaccines and build up capacity levels in poor and middle income nations now.