2 Influenza epidemics account for 250,000 to 500,000 deaths globally each year. These epidemics are markedly seasonal, occurring in temperate climates in the northern and southern hemispheres during their respec- 11ebda36_0507_0fdb_be32_e76f19bdc6dd_SM1035_00 tive winters. By contrast, in the tropics, there is significant influenza activity year round, with a peak in the rainy sea- son (Figure Q23-3). Can you suggest some possible expla- nations for the patterns of influenza epidemics in temper- ate zones and the tropics?

book Molecular Biology Of The Cell 6th Edition by Bruce Alberts, Alexander Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter cover

Molecular Biology Of The Cell 6th Edition by Bruce Alberts, Alexander Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter

النسخة 6الرقم المعياري الدولي: 978-0815345244

Molecular Biology Of The Cell 6th Edition by Bruce Alberts, Alexander Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter

النسخة 6الرقم المعياري الدولي: 978-0815345244

تمرين 4

2 Influenza epidemics account for 250,000 to 500,000 deaths globally each year. These epidemics are markedly seasonal, occurring in temperate climates in the northern and southern hemispheres during their respec-

tive winters. By contrast, in the tropics, there is significant influenza activity year round, with a peak in the rainy sea- son (Figure Q23-3). Can you suggest some possible expla- nations for the patterns of influenza epidemics in temper- ate zones and the tropics?

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Negative strand viruses such as Rift Val...