Define a disease outbreak.
What will be an ideal response?
The World Health Organization defines a disease outbreak as the occurrence of cases of disease in excess of what would normally be expected in a defined community, geographical area or season. An outbreak may occur in a restricted geographical area or may extend over several countries. It may last for a few days, or weeks, or for several years.
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In which of the following ways does the integumentary system prevent pathogens from entering the body?
A) Via humoral immunity B) Via cell-mediated immunity C) By secreting chemotactic factors D) By providing a barrier to the environment
A collapse zone for a Type IV structure should be established when:
A. its veneer begins to curtain collapse. B. walls begin to shift because the building is twisting. C. the structure has been weakened by repeated fires over time. D. it has been determined that glass shards will be directed at on-scene personnel.