By some estimates, 2 billion people are now infected worldwide, and in 2019, around 1.4 million people died from it.
It’s a pandemic infection, spread through the air — but it’s not COVID. It’s tuberculosis (or TB). Yet we’re not in lockdown for it. And we’re not queuing up for a vaccine.
Some people call TB “the forgotten pandemic”. But our knowledge of one pandemic is helping us manage the other.
TB is caused by the bacterium Mycobacterium tuberculosis. And COVID is caused by SARS-CoV-2, a virus. They’re quite different microorganisms. But it’s easy for them to overlap in people’s minds.
Both TB and COVID are infectious diseases that generally affect the lungs. Both are passed between people mainly by aerosols, when infected people cough, sing or otherwise release them into the surrounding air.