I NEED TO KNOW THIS QUESTION FOR A PROJECT!!!! PLEASE HELP
Infectious Diseases - 1 Answers
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This is interesting! You would expect that tuberculosis occurs most in winter, because many other respiratory diseases (such as the common cold and the flu) occur in the winter months. But contrary to what I thought, most tuberculosis cases are diagnosed in spring or summer. There is variation between countries, however. Here are some studies: A UK study from 1996 showed that most TB cases occur in summer. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC472621/ In Japan, most TB cases occur in spring and summer. http://www.ncbi.nlm.nih.gov/pubmed/17044204 In northern India, tuberculosis diagnosis peaks between April and June. But no seasonality was found in the south of India. http://www.ncbi.nlm.nih.gov/pubmed/15519633 Another, more recent study found that most TB cases in Kuweit occur in April, so in spring. http://www.biomedcentral.com/1471-2334/8/3 So it is safe to say that most TB cases are diagnosed in spring or summer, depending on the country. But the tricky part of your question is that it asks for when TB spreads the most. It is a very slow developing disease, so if could take months before it is diagnosed. Maybe the actual peak in SPREAD is therefore actually in winter
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