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The industry is searching for new customers among children, according to experts.
While a regular doctor treats individual patients, an epidemiologist studies how diseases spread, identifies affected populations, analyses patterns.
A seven-year-old girl was found infected with the contagious shigella bacteria after she developed symptoms on April 20 and 21.
Here is a list of international sports events affected by the coronavirus, which has killed more than 550 people and infected over 28,000 in China.
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