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日期:2025-06-10
Laughter brings us closer together -- it's a language we all understand. It's also contagious:watch this video to see what we mean....
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日期:2025-06-09
A catch-22 is a paradoxical situation from which an individual cannot escape because of contradictory rules.[1][2] Catch-22s often result from rules, regulations, or procedures that an individual is subject to but has no control over because to fight the ...
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日期:2025-06-04
A man with Ebola spent four days out in the Dallas community, possibly infecting others. So why are health officials so sure they can stop Ebola from spreading? ... Many factors contribute to the R0, such as how long you're infectious** and how many virus...
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日期:2025-06-06
The yawn reflex has long been observed to be contagious. In 1508, Erasmus wrote, "One man's yawning makes another yawn.", and the French proverbialized the idea to "Un bon bâilleur en fait bâiller sept." ("One good gaper makes seven others gape"). Often, ...
Oral Herpes: Are Cold Sores Contagious? - eMedicineHealth - experts in everyday emergencies, first a
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日期:2025-06-06
Oral herpes (cold sores) is an infection caused by the herpes simplex virus (HSV). Read about oral herpes symptoms, outbreak stages, signs, treatment, transmission, and prevention. ... Oral herpes is an infection of the mouth and lips caused by a specific...
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日期:2025-06-03
Learn more from WebMD experts about MRSA, a contagious and antibiotic-resistant staph bacteria that leads to potentially dangerous infection. ... What Is MRSA? Methicillin-resistant Staphylococcus aureus (MRSA) is a bacterium that causes infections in ......
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日期:2025-06-04
Because the natural reservoir host of Ebola viruses has not yet been identified, the way in which the virus first appears in a human at the start of an outbreak is unknown. However, scientists believe that the first patient becomes infected through contac...