the kin lesions associated with mallpox quizlet

Symptoms of smallpox begin 12-14 days (range: 7-17) after exposure, starting with a 2-3 day prodrome of high fever, malaise, and prostration with severe headache and backache. Indirect spread (i.e., not requiring face-to-face contact with an infectious person) through fine-particle aerosols or a fomite containing the virus was less common. The most frequent mode of transmission was person-to-person, spread through direct deposit of infective droplets onto the nasal, oral, or pharyngeal mucosal membranes, or the alveoli of the lungs from close, face-to-face contact with an infectious person. During the smallpox era, the only known reservoir for the virus was humans no known animal or insect reservoirs or vectors existed. Variola virus is the etiological agent of smallpox. Variola minor is a less common clinical presentation, and much less severe disease (for example, historically, death rates from variola minor are 1% or less). Smallpox vaccination also does not provide much protection, if any, against hemorrhagic smallpox. Hemorrhagic smallpox has a much shorter incubation period and is likely not to be initially recognized as smallpox when presenting to medical care.

However, flat and hemorrhagic smallpox, which are uncommon types of smallpox, are usually fatal. Historically, variola major has a case-fatality rate of about 30%. There are four types of variola major smallpox: ordinary (the most frequent) modified (mild and occurring in previously vaccinated persons) flat and hemorrhagic. It is also the most common form of smallpox. Variola major is the severe form of smallpox, with a more extensive rash and higher fever. Two clinical forms of smallpox have been described. The name is derived from the Latin word for 'spotted' and refers to the raised bumps that appear on the face and body of an infected person. There is no specific treatment for smallpox disease, and the only prevention is vaccination. Smallpox is a serious, highly contagious, and sometimes fatal infectious disease.

The kin lesions associated with mallpox quizlet