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Enteric viruses primarily infect the intestinal tract through ingestion of food and water contaminated with viruses of fecal origin. Some viruses can be transmitted through all three routes of transmission. Water virology started about half a century ago when scientists attempted to detect the polio virus in water samples. [3]
In developing nations, clean water and formula are not as readily available, therefore, breastfeeding is often encouraged to provide children with adequate food and nutrients because the benefit of nourishment outweighs the risk of HIV transmission. [56]
HIV-1 is more virulent and more infective than HIV-2, [20] and is the cause of the majority of HIV infections globally. The lower infectivity of HIV-2, compared to HIV-1, implies that fewer of those exposed to HIV-2 will be infected per exposure. Due to its relatively poor capacity for transmission, HIV-2 is largely confined to West Africa. [21]
Fecal–oral transmission is primarily considered as an indirect contact route through contaminated food or water. However, it can also operate through direct contact with feces or contaminated body parts, such as through anal sex. [19] [20] It can also operate through droplet or airborne transmission through the toilet plume from contaminated ...
The World Health Organization (WHO) issued consultative recommendations regarding nutrient requirements in HIV/AIDS. [6] A generally healthy diet was promoted. For HIV-infected adults, the WHO recommended micronutrient intake comes from a good diet at RDA levels; higher intake of vitamin A, zinc, and iron can produce adverse effects in HIV positive adults, and these were not recommended unless ...
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Main causes of fecal–oral disease transmission include lack of adequate sanitation (leading to open defecation), and poor hygiene practices. If soil or water bodies are polluted with fecal material, humans can be infected with waterborne diseases or soil-transmitted diseases. Fecal contamination of food is another form of fecal-oral transmission.
The CDC report noted the unprecedented nature of the findings, writing that “HIV transmitted through cosmetic injection services via contaminated blood has not been previously documented.”