Meat-free diet may lower severe Covid-19 risk (reuters.com)

low meat diet lowers tons of health problems...

In other words: being less fat is good for your health.

Meat-free diets may lower the probability of future pandemics

Well there's a 'may' in that title. So likely just something put out by pro-veg or animal rights group. So another case of trying to scare people in to doing something. It would have been more believable if it had been something like 'less meat in your diet may lower ...'