A child is suffering from a fever and has reddish cheeks, arms, and thighs. The rash intensifies upon exposure to the sun. What is the likely infectious agent?
What will be an ideal response?
The child is probably infected with B19 virus. The absence of sore throat and swollen lymph nodes rules out HHV-6. Also, the rash of HHV-6 is pinkish rather than red. The aggravation of the rash by sunlight is also consistent with fifth disease (one of the names for disease caused by B19 virus). The appearance of the rash is also not consistent with HHV-3 infection (chickenpox), in which the rash is spotty and progresses to vesicles. The absence of symptoms other than fever and rash largely rules out other childhood illnesses that produce a rash.
You might also like to view...
How could you tell the difference between a brachiopod and a clam?
a. brachiopod is sessile, clam is not b. brachiopod has two valves, clam does not c. brachiopod has a fleshy stalk (pedicel), clam does not d. brachiopod is a filter feeder, clam is not
Which cytoskeletal element anchors the proteins actin and myosin to strengthen the cytosol?
a. intermediate filaments b. flagella c. collagen d. microfilaments e. centrioles
Fertilization of an egg in vitro, leading to separation of individual cells from the 8-cell stage for implantation into a surrogate mother is called ________
Fill in the blank(s) with correct word
The ________ principle states that two species cannot occupy the same niche in the same habitat at the same time
Fill in the blank(s) with correct word