In February 2021, Dr Craig Spencer wrote in a Medium post that he was as “eager as anyone to see the end of this pandemic. Thankfully, that may be in sight”.

“Covid cases and hospitalizations are dropping,” wrote Spencer, director of Global Health in Emergency Medicine at New York-Presbyterian/Columbia University Medical Center. “Vaccines are getting into arms. So, what happens next?”

Next was, of course, more Covid-19.

So – almost a year later – while Spencer is encouraged by the fact that the growth in the number of new Covid cases has slowed in parts of the country, he has been humbled by earlier waves and is not ready to celebrate the beginning of the end of the pandemic.

“It’s not like you get to the top of Everest, have a small party and then start your ascent…