原级：pandemic
1. The International AIDS Vaccine Initiative says AIDS is one of the most devastating pandemics.
2. Zeng said that the three flu pandemics over the past century were all caused by a hybrid virus.
3. When pandemics swept through Europe in the Middle Ages, people ate garlic every day hoping to survive.
4. pandemics
4. WHO Director General Margaret Chan warns that there had been second and third waves in previous pandemics.
5. Influenza vaccines are one of the most effective ways to protect people from contracting illness during influenza epidemics and pandemics.
6. At the same time, the world's population is in some ways more vulnerable than it was during previous pandemics.
7. The report said no mass pandemics took place on the Chinese mainland last year.
8. WHO said bird flu could potentially cause more deaths than those from the global flu pandemics.
9. The severity of pandemics can change over time and differ by location or population.
10. This is what happened during the 1918 Spanish flu, the deadliest of last century's three pandemics.