Dr Christian Chenay is almost old enough to remember the 1918 Spanish flu, and he treated typhus sufferers during World War Two.

Now, as he nears his 99th birthday, he is still caring for patients through the coronavirus pandemic.

Dr Chenay holds virtual consultations for patients, some of whom he has treated for decades, over the phone and internet and is back to making weekly visits to a retirement home for missionaries, after a brief spell in quarantine.

But he had to halt drop-in appointments at his surgery in Chevilly-Larue, a Parisian suburb, after two patients turned aggressive, demanding he hand over his small supply of face masks.