A 6-year-old client presents with polyarthritis, and the parents report no medical history except for a sore throat 4 weeks ago. On physical examination, a murmur is noted. Which diagnosis is supported by the assessment data?

A. acute rheumatic fever
B. caditis
C. Rheumatoid arthritis
D. Arthritis
E. Reiter syndrome

A. Acute rheumatic fever.

Explanation:

Acute rheumatic fever is an autoimmune response to the infection of bacteria called group A streptococcus. This infection commonly occurs in children and particularly after 2 to 3 weeks of pharyngitis or sore throat. It has manifestations of cardiac (murmur), rheumatologic, and neurologic.

So, the above symptoms shown in question is purely related to acute rheumatic fever.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.