During the last six months, news reports have mentioned dozens of drugs that may be effective against the new coronavirus. Here we lay out the evidence and reveal which ones are proven to work. Or not.

Epidemiological data suggests that 80% of COVID-19 cases can be traced to just 20% of those infected with SARS-CoV-2.

We don't have vaccines for the Sars, Mers or the common cold. But that doesn't mean scientists won't crack it this time.

A molecule responsible for lowering our blood pressure also helps coronavirus get into our cells and replicate. And it occurs more in men than in women.

COVID-19 and SARS are both deadly – but different. SARS symptoms were quick to appear, making it easier to contain. Because health officials were able to contain it, the virus died off.

Winter is flu season – could it be coronavirus season as well? The research is mixed, but other factors besides temperature and humidity have more to do with the spread of SARS-CoV-2.

Ever heard of 229E, OC43, NL63 and HKU1?

Two phrases you hear a lot these days are viral load and infectious dose. What do they mean? Do they reflect the severity of disease or whether someone will get severely ill? Two experts explain.