USMLE Step 1

USMLE Step 1 QUESTION of the DAY!

Coxsackievirus is an RNA virus that causes a variety of problems including myocarditis and herpangina, a febrile pharyngitis. All of the following are characteristics of coxsackievirus except:

A) single stranded
B) helical
C) hand, foot, and mouth disease
D) Picornavirus family
E) Positive polarity

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Answer: B) helical. Coxsackievirus’ capsule is an icosahedral symmetry. It is a member of the Picornavirus family, has no envelope, single stranded, positive polarity, linear, and icosahedral capsid symmetry. It is the genesis of aseptic meningitis, herpangina, myocarditis, and hand, foot, and mouth disease.



USMLE Step 1 D.O.C. of the Day!

Drug of choice for

Yersinia Pestis causing plague

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Streptomycin


USMLE Step 1 Fact of the day!

Causes of edema:
- Increases hydrostatic pressure
- Reduced oncotic pressure
- Sodium retention
- Increased capillary permeability
- Lymphatic obstruction