


Hepatitis B Serology and Vaccination
Hepatitis B is an infection of the liver caused by the hepatitis B virus (HBV), a double-stranded DNA virus of the Hepadnaviridae family that replicates by reverse transcription. Hepatitis B is the most common cause of hepatitis globally, and the World Health...
Understanding Vaccination
Vaccination is the administration of antigenic material (the vaccine) to stimulate an individual’s immune system to develop adaptive immunity to a particular pathogen. Herd immunity is a type of indirect protection from infectious disease that occurs when a...
A Patient with Troublesome Acne
You review a patient with moderately severe acne that has been treated with a variety of topical agents over the past 6 months. There has been a poor response treatment and you consider switching to an oral antibiotic. You are aware that there is an increasing issue...