Question 49

West Nile virus is the infectious disease described.

The patient’s symptoms, including fever, tremors, convulsions, and stupor, combined with the presence of mosquito bites, strongly suggest an infection caused by the West Nile virus, which is transmitted through mosquito bites.

A) West Nile virus

This option is correct as the symptoms presented align with those commonly associated with West Nile virus infection. The combination of neurological symptoms such as tremors and convulsions, along with the notable mosquito bites, points to this viral infection, which is endemic in many regions and is particularly associated with mosquito transmission.

B) H1N1 flu

H1N1 flu, or swine flu, primarily presents with respiratory symptoms such as cough, fever, and body aches, rather than neurological symptoms like tremors or convulsions. The absence of respiratory distress in the provided symptoms makes this option incorrect.

C) Erythema infectiosum

Erythema infectiosum, also known as fifth disease, is caused by parvovirus B19 and typically presents with a characteristic rash and mild flu-like symptoms. The severe neurological symptoms and mosquito bites in this case do not relate to this disease, rendering this option incorrect.

D) Lyme disease

Lyme disease is transmitted through tick bites and generally presents with symptoms like fever, headache, fatigue, and a characteristic rash known as erythema migrans. The presence of mosquito bites and the specific neurological symptoms described do not correlate with Lyme disease, making this option incorrect.

Conclusion

West Nile virus is definitively the correct answer due to the clear association between the symptoms of neurological distress and mosquito bites. In contrast, the other options present symptoms and transmission methods that do not align with those presented in the case, thereby confirming their incorrectness.