Question

question 1 (1 point)

1. the most common type of human helminth disease in the us is

a) pinworms
b) shistosomiasis
c) tapeworm
d) heartworms
question 2 (1 point)

1. untreated syphilis is marked by distinct clinical stages interspersed by latent periods. secondary syphilis signs include

a) hard chancre
b) snuffles.
c) gummas
d) red or brown skin rash

Explanation:

• Question 1: Pinworms (Enterobius vermicularis) are highly contagious and commonly infect children in the US, especially in environments like schools and day - cares. Shistosomiasis is more prevalent in tropical and subtropical regions where the intermediate snail host is present. Tapeworm infections often occur due to consumption of undercooked meat (e.g., pork for Taenia solium), but it is not as common as pinworm. Heartworms are mainly a concern in animals (especially dogs), not as a common human helminth disease in the US.
• Question 2: A hard chancre is a sign of primary syphilis. Snuffles is a symptom seen in congenital syphilis (in infants). Gummas are a sign of tertiary syphilis. A red or brown skin rash (which can be macular, papular, or pustular) is a characteristic sign of secondary syphilis.

Answer:

1. A. Pinworms
2. D. red or brown skin rash