The presence of temporary workers reside in households or living in the shack camps and exchanges with local people can cause infectious diseases among workers with locals and vice versa. In the course of construction, the use of water resources did not meet hygiene standards for workers in the camp Shack or construction can also cause diseases of the stomach and intestines or the spread of insect transmitted diseases (such as dengue fever, malaria, etc.) when infected migrant workers being bitten by insects (mosquitoes) then transmitted the disease to others. Besides, some social diseases such as HIV/AIDS, syphilis ... also the risk caused by workers from other places to if no health management program accordingly.
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