Hepatitis B virus (HBV) and HIV are bloodborne viruses transmitted primarily through sexual contact and injection-drug use. Because of these shared modes of transmission, a high proportion of adults at risk for HIV infection are also at risk for HBV infection.

HIV, the hepatitis B and hepatitis C viruses can also be spread by sharing needles, syringes, and other injection equipment. It can transfer from mother to child Pregnant women can pass these infections to their infants. HIV-HCV coinfection increases the risk of passing on hepatitis C to the baby. The hepatitis C virus is usually spread when someone comes into contact with blood from an infected person.

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2 years ago

Describe three conditions that create opportunities for pathogens to become harmful in a human.

Anna007 [38]

There are numerous circumstances that give pathogens the chance to harm people.

The first occurs when an infection has already weakened the immune system. In situations like this, other pathogens may infect the host opportunistically and cause an infection. If the human host does not maintain proper personal and environmental hygiene, that is another condition. Many pathogens thrive in unclean environments, so by failing to maintain proper environmental hygiene, a person increases his risk of contracting a pathogen.

Finally, since so many pathogens are transferred by vectors, humans are more likely to contract the diseases that these vectors aid in spreading if they do not take the necessary precautions to stop their activity.

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2 years ago

The physical activity readiness questionnaire (par-q) is designed to establish a proper exercise intensity level. identify poten

professor190 [17]

Just list some areas you'd like to imporve on physical fitness and readiness for testing your abilities

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3 years ago

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