I would guess a lot are also not set up at home to work efficiently. I.e. proper desk in a quiet room etc. And if the kids are home from school as well, I assume it is very hard to concentrate on working from home.

Also if there is the threat of an incoming pandemic, then my priorities would be elsewhere than work. I.e. securing family, provisions, medicines, etc. And checking news sources about the epidemic every 5 minutes is not good for efficiency...