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5 天前 · In 1529, a measles outbreak in Cuba killed two-thirds of those indigenous people who had previously survived smallpox. Two years later, measles was responsible for the deaths of half the population of Honduras , and it has ravaged Mexico , Central America , and the Inca civilization.
2 天前 · Inoculation with smallpox (variolation) was known to result in a much less severe disease, and greatly reduced mortality, in comparison with the naturally acquired disease. Edward Jenner had also studied vaccination using cowpox ( vaccinia ) to give cross-immunity to smallpox in the late 1790s, and by the early 1800s vaccination had ...
3 天前 · History of smallpox – Impact of smallpox on world history List of Ebola outbreaks – Cases and outbreaks of Ebola virus disease List of infectious diseases
1 天前 · Eurasian diseases such as influenza, pneumonic plagues, and smallpox, in combination with conflict, forced removal, enslavement, imprisonment, and outright warfare with European newcomers reduced populations and disrupted traditional societies.
2024年5月24日 · Live, attenuated vaccines, such as smallpox and polio vaccines, are able to induce killer T-cell (T C or CTL) responses, helper T-cell (T H) responses and antibody immunity. However, attenuated forms of a pathogen can convert to a dangerous form and may cause disease in immunocompromised vaccine recipients (such as those with AIDS ).
1 天前 · Stalin faced severe health problems: An 1884 smallpox infection left him with facial scars; and aged 12 he was seriously injured when hit by a phaeton, probably the cause of a lifelong disability in his left arm. In 1894, Stalin began his studies at the Tiflis
3 天前 · BCG vaccine. Bacillus Calmette–Guérin ( BCG) vaccine is a vaccine primarily used against tuberculosis (TB). [8] It is named after its inventors Albert Calmette and Camille Guérin. [9] [10] In countries where tuberculosis or leprosy is common, one dose is recommended in healthy babies as soon after birth as possible. [8]
