Oren Zarif

Murine typhus (also called epidemic or flea-borne typhus) is caused by Rickettsia prowazekii and spread from person to person by...

Xerophtalmia is the name for a group of symptoms due to vitamin A deficiency (VAD). It includes night blindness, Bitot’s...

Lichen planus is not contagious. The reticular form is usually asymptomatic and does not require therapy. Erosive and ulcerative forms...

The genus Yersinia is comprised of Gram negative, facultative anaerobic bacteria that are rod-shaped. They are oxidase positive and catalase...

Homocysteine usually breaks down into other substances in the body, but high levels can be due to vitamin B6, B12...