High School

How is a reemerging pathogen different from an emerging pathogen?

A. A reemerging pathogen is an infectious bacterial infection that manifests once every few months but goes away without treatment and only blisters the skin in another few months.

B. A reemerging pathogen is an infectious agent that was identified previously in one location but is now emerging in a new separate location.

C. A reemerging pathogen is an infectious agent that was under control due to prevention or treatment strategies and is now resurfacing.

D. A reemerging pathogen is an infectious helminth that was detected in one location of the body but receded and emerged from a second location.

E. A reemerging pathogen is an infectious agent that went away when the patient was taking antibiotics but quickly returned when the patient stopped taking the antibiotics.

Answer :

Final answer:

An emerging pathogen is a disease that is new or increasing in prevalence, while a reemerging pathogen is a disease that was once controlled, but is increasing in frequency due to a change in conditions or the breakdown of prevention regimes.

Explanation:

An emerging pathogen is defined as one that has appeared in a population for the first time, or one that may have existed previously but is rapidly increasing in incidence or geographic range as monitored by organizations like the World Health Organization (WHO) and the CDC.

As for a reemerging pathogen, it is an infectious agent that was previously under control due to prevention or treatment strategies but is now resurfacing, possibly due to changing conditions or failure of previous prevention regimes.

Diseases such as drug-resistant forms of tuberculosis, bacterial pneumonia, and malaria are examples of reemerging diseases. The WHO has identified certain diseases like dengue fever, yellow fever, diphtheria, cholera, and bubonic plague whose worldwide reemergence should be monitored. These diseases were catastrophic in the past, devastating populations, and became dormant for a while, only to come back, sometimes even more virulent than before.

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