Prevalence and Incidence of Smallpox
Smallpox Prevalence: Book Excerpts
Incidence (annual) of Smallpox:
0 cases throughout the world. ... see also overview of Smallpox.
Incidence Rate:
approx 1 in 0 or 0.00% or 0 people in USA [Source statistic for calcuation: "0 cases throughout the world." -- see also general information about data sources]
Incidence extrapolations for USA for Smallpox:
0 per year,
0 per month,
0 per week,
0 per day,
0 per hour,
0 per minute,
0 per second.
[Source statistic for calculation: "0 cases throughout the world." -- see also general information about data sources]
Prevalence/Incidence of Smallpox: Online Medical Books
16 MEDICAL BOOKS ONLINE!
Review excerpts from medical books online, free, without registration,
for more information about the prevalence and/or incidence of Smallpox.
Varicella:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Chickenpox can occur at any age, but it's most common in children ages 2 to 8. Congenital varicella may affect infants whose mothers had acute infections in their first or early second trimester. Neonatal infection is rare, probably because of transient maternal immunity. However, neonates born to mothers who develop varicella 5 days before delivery or up to 2 days after delivery are at risk for developing severe generalized varicella. Second attacks are also rare. This infection is transmitted by direct contact (primarily with respiratory secretions; less commonly, with skin lesions) and indirect contact (airborne). The incubation period usually lasts 14 to 17 days but can be as short as 10 days and as long as 20 days. (See Incubation and duration of common rash-producing infections, page 232.) Chickenpox is probably communicable from 1 day before lesions erupt to 6 days after vesicles form (it's most contagious in the early stages of eruption of skin lesions).
Chickenpox occurs worldwide and is endemic in large cities. Outbreaks occur sporadically, usually in areas with large groups of susceptible children. It affects all races and both sexes equally. Seasonal distribution varies; in temperate areas, incidence is higher during late autumn, winter, and spring.
Most children recover completely. Potentially fatal complications may affect children on corticosteroids, antimetabolites, or other immunosuppressants and those with leukemia, other neoplasms, or immunodeficiency disorders. Congenital and adult varicella may also have severe effects.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Variola:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Smallpox affected people of all ages. In temperate zones, incidence was highest during the winter; in the tropics, during the hot, dry months. Smallpox was transmitted directly by respiratory droplets or dried scales of virus-containing lesions or indirectly through contact with contaminated linens or other objects. Variola major was contagious from onset until after the last scab was shed.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
About prevalence and incidence statistics:
The term 'prevalence' of Smallpox usually refers to the estimated population
of people who are managing Smallpox at any given time.
The term 'incidence' of Smallpox refers to the annual diagnosis rate,
or the number of new cases of Smallpox diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.
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