许多染上性传染病的人实际上并不知道他们已经感染了。
Many people who have STDs don't actually know they're infected.
今年世界卫生组织宣布H1N1型流感为全球性传染病。
The World Health Organization this year declared H1N1 a global epidemic.
他被感染了一种潜伏性的传染病。
细菌性痢疾是威胁我国人民健康的主要传染病。
Dysentery is the most serious infectious disease threatening the people's health in our country.
细菌性痢疾是威胁我国人民健康的主要传染病。
Dysentery is the most serious infectious disease threatening the people's health in our country.
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