> Some hospitals in Beijing have up to 80% of their staff infected, but many of them are still required to work due to staff shortages

At a certain point to provide needed healthcare you need essential workers to still show up when testing positive. Maybe even show up with mild to medium symptoms if their absence will cause more harm to health and safety.

If the choice is between no healthcare vs healthcare with infected workforce then I would choose the latter for critical cases. It will cause deaths but more would die if there was no one running needed ventilators to keep serious ill people alive.