One year of the COVID-19 pandemic: eight things we learned-Honest Horse china garnet sand

One year of the COVID-19 pandemic: eight things we learned

1. Masks are essential
2. Not only the elderly will be affected
3. The new coronavirus disease is not a "little cold"
4. The new coronavirus originated in animals (not made in laboratories)
5. Malaria drugs cannot treat COVID-19
6. The chance of infection from the packaging is very low
7. Possible secondary infection
8. So far, the vaccine is still effective against variant viruses