Microcheck 201

The reservoir of a disease agent can be infected people, other animals, or the environment. In order to spread, infectious organisms must exit a host. Handwashing and vector control can prevent many diseases; airborne

20.2 Epidemiological Studies 493

transmission of pathogens is difficult to control. The portal of entry of a pathogen can affect the outcome of disease. The outcome of transmission is affected by the dose, the incubation period, and characteristics of the host population.

■ Explain why smallpox was successfully eradicated but rabies probably never will be.

■ Contrast the transmission of bubonic plague with that of pneumonic plague.

■ Considering that circulating blood is not normally released from the body, describe how blood-borne microbes might exit.

Bacterial Vaginosis Facts

Bacterial Vaginosis Facts

This fact sheet is designed to provide you with information on Bacterial Vaginosis. Bacterial vaginosis is an abnormal vaginal condition that is characterized by vaginal discharge and results from an overgrowth of atypical bacteria in the vagina.

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