What does it mean when a scab is growing on your pimple on your face?

The presence of aids in a community often increases its level of property what is one of the main reasons for this

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.

The only infectious disease that was a top-ten killer of americans in 1900 that is still a top-ten killer in 1990 is hiv/aids select one: true false