Material from people mildly ill with smallpox (fluid or pus from the papules, scabs over the pox) was scratched into the skin of people who had never had the illness, in an attempt to produce a mild reaction and its accompanying protective effect. These efforts often resulted in full-...
intestines, lungs, kidneys, and brain. The virus activity in the skin cells creates a rash that starts as macules (flat, red lesions). After this, vesicles (raised blisters) form. Then, pustules (pus-filledpimples) appear about 12-17 days after a person becomes infected...
上文“A blister on feet caused by a graze usually heals in a few days with home treatments.(脚部因擦伤而起的水泡通常在家庭治疗几天后就会愈合。)”提到了因擦伤引起的水疱治疗方法,G选项“然而,一些水泡对这些治疗没有反应,随着时间的推移会变得更糟。”在逻辑上与上文构成了转折关系。故选G项。 (...
Smallpox is an infectious disease caused by a virus. The initial symptoms of the disease included fever and vomiting. This was followed by the formation of sores in the mouth and a skin rash. The skin rash turned into fluid-filled bumps with a dent in the center. The bumps then scabbed ...
These would then become raised lesions, which would soon fill with a watery pus similar to a blister. The lesions would grow to approximately the size of a dime, and would quickly transform into pustules as hard crusty scabs formed over their surface. ...
Later: Fluid filled blisters which scab over[5] Complications Scarring of the skin, blindness[6] Usual onset 1 to 3 weeks following exposure[5] Duration About 4 weeks[5] Causes variola major virus, variola minor virus (spread between people)[6][7] Diagnostic method Based on symptoms and...