Human population growth serves as an important model for population ecologists, and is one of the most important environmental issues of the twenty-first century.
Fluids that Spread Bloodborne Pathogens. The transmission of bloodborne pathogens from one person to another occurs through the transfer of infected body fluids. Common body fluids which can transmit pathogens include: blood. cerebral spinal fluid. semen. vaginal secretions.
Of these, hepatitis B is most likely to be spread through blood, and HIV is the least likely. These viruses can also be found in body fluids other than blood, such as semen, vaginal secretions and breast milk.here are some infections that can be passed on in blood or body fluids that can become mixed with blood, such as saliva. These are known as blood-borne viruses (BBVs). The risk of an infection being passed on in this way largely depends on the type of infection and how you come into contact with the infected blood.