By breathing in the virus during close, face-to-face contact with an infected person. It usually spreads through drops of saliva when the person coughs, sneezes, or speaks. By handling the clothes or sheets of an infected person or coming into contact with their body fluids. Very rarely, ...
Photo used with the permission of the World Health Organization (WHO). View Media Gallery Types of smallpox The 2 predominant variants of variola, major and minor, differ greatly in their mortality rates (30% vs 1%, respectively). Variola major was the predominant endemic strain throughout...
Hospitalization and isolation of the infected person and vaccination of those who have had close direct contact with that person, particularly after the rash began to develop Previous vaccination does not provide lifelong immunity and booster vaccination is necessary for those who may be or have been...
(World History Archive/Alamy Stock Photo) A“Founding Mother” Ahead of Her Time. Abigail Adams, left, loved her husband, but found irritating his dismissive attitude toward the roles of women, and was not shy about telling him so. (National Gallery of Art) Circulation by the enemy of ...
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Each case of smallpox arose from close contact with another case of thedisease, usually by inhalation of virus that had been expelled in the breath or saliva droplets of an infected person. Despite the hardiness of the variola virus, smallpox was not a highly infectious disease; infected per...
By breathing in the virus during close, face-to-face contact with an infected person. It usually spreads through drops of saliva when the person coughs, sneezes, or speaks. By handling the clothes or sheets of an infected person or coming into contact with their body fluids. Very rarely, ...