1. 50% of people need to be immune to the virus
Quarantining and isolation isn’t a long term solution, the only way for this to get under control is for 50 percent of people to become immune to it.
2. When the virus won’t have enough hosts
Usually, pandemics stop when they don’t have susceptible bodies to infect. That’s what happened in the past with the Spanish flu.
3. Until complete immunity is developed with a vaccine
Covid-19 will not disappear anytime soon considering that experts are continuing to develop a vaccine. This may take up to 12-19 months.
4. If the virus becomes less deadly in the future
There is a hypothesis that as the virus spreads, it may become less effective over time due to evolution and will establish itself as a common respiratory virus.