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Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Fifth disease, also known as erythema infectiosum and slapped cheek syndrome, [3] is a common and contagious disease caused by infection with parvovirus B19. [4] This virus was discovered in 1975 and can cause other diseases besides fifth disease. [5] Fifth disease typically presents as a rash and is most common in children.
Fifth Disease, or parvovirus B19, also known as erythema infectiosum. Roseola, a viral infection occasionally still called Sixth disease, which can cause high fever and rash.
There have been various major infectious diseases with high prevalence worldwide, but they are currently not listed in the above table as epidemics/pandemics due to the lack of definite data, such as time span and death toll. An Ethiopian child with malaria, a disease with an annual death rate of 619,000 as of 2021. [18]
After the latency period (but before clinical infection) the infected person can transmit the disease without signs of any symptoms. Such infection is called subclinical infection. Incubation period (also known as the latent period or latency period ) is the time elapsed between exposure to a pathogenic organism, a chemical, or radiation , and ...
In epidemiology, particularly in the discussion of infectious disease dynamics (modeling), the latent period (also known as the latency period or the pre-infectious period) is the time interval between when an individual or host is infected by a pathogen and when that individual becomes infectious, i.e. capable of transmitting pathogens to ...
The term childhood disease refers to disease that is contracted or becomes symptomatic before the age of 18 or 21 years old. Many of these diseases can also be contracted by adults. Some childhood diseases include:
Persons inadmissible under Section 212(a)(3)(B) of the Immigration and Nationality Act have been involved in a current or past terrorist group; contributed finances to a current or past terrorist group; relatives whom are or have been involved in a current or past terrorist group; provided medical assistance to a past or current terrorist