Common causes of secondary dysmenorrhea include: 1  Endometriosis. 2  Endometriosis is a chronic and often progressive disease that develops when the tissue that lines the uterus (endometrium) grows onto other areas, such as the ovaries, bowels, or bladder. 3  It often causes chronic pelvic pain. Endometriosis. 2  Endometriosis is a chronic and often progressive disease that develops when the tissue that lines the uterus (endometrium) grows onto other areas, such as the ovaries, bowels, or bladder. 3  It often causes chronic pelvic pain.
Typhus is a contagious bacterial disease which passes from person to person using lice as a vector.The bacteria cannot survive outside of a living cell for extended periods of time and other forms of person to person transmission are rare. patient with a rash caused by typhus. Typhus used to thrive in crowded conditions, such as such as prisons, ships, army camps and even quarantine camps. Epidemics would often kill thousands of people, most notably in the great typhus epidemic of 1847 in Canada which killed 20,000 people.
Epidemic typhus, which is sometimes called jail fever or louse-borne typhus, is caused by Rickettsia prowazekii, which is carried by body lice. When the lice feed on a human, they may simultaneously defecate.When the person scratches the bite, the feces (which carrys the bacteria) are scratched into the wound.urine typhus is a less common variety, also known as tabardillo and endemic, rat, or flea typhus. As indicated by the term murine, it is transmitted by rat or mouse fleas. The symptoms are like those of louse-borne typhus but are less severe, and recovery occurs sooner.