Q. Ebola virus is an example of a pathogen associated with which risk group?
A). Risk group-1
B). Risk group-2
C). Risk group-3
D). Risk group-4
Answer: Risk group-4
Explanation: The members of the genus Ebolavirus are considered to be Risk Group-4 (RG4) human pathogens and RG4 animal pathogens. Ebolavirus is also represented as a security-sensitive biological agent (SSBA).
The microorganisms that do not cause infection in healthy adult humans are considered to be risk group-1 microbes.
Example: Some E. coli strains, Lactobacillus spp., some Bacillus spp., and Saccharomyces spp. (yeast).
The organisms are responsible for the treatable or preventable diseases are classified as risk group-2 microbes.
Example: Herpes virus, Hepatitis A, B, C, D, and E viruses, All human papillomaviruses, Paramyxoviruses, Cladosporium bantianum, Streptococcus spp., Amycolata autotrophica, Yersinia enterocolitica, Salmonella spp., Neisseria gonorrhoeae, Mycobacterium spp, Staphylococcus aureus, Helicobacter pylori, Vibrio cholerae, etc.
The organisms that cause more harm to humans are considered to be risk group-3 microbes. However, the treatment options and vaccines for these diseases may available.
Example: Coronaviruses, Arenaviruses, Semliki forest virus, Chikungunya virus, Pasteurella multocida, Yersinia pestis, Rickettsia spp., Brucella spp., Bartonella spp., Coccidioides immitis, Histoplasma spp., etc.
The microbes that are responsible for the deadly diseases in humans are classified as risk group-4 human pathogens. The transmission rate of these microbes from one person to another is very high. No treatment options or vaccines are available for these diseases.
Example: Ebolavirus, Junin virus, Marburg virus, Machupo virus, Lassa virus, Bunyaviruses, Polyomavirus, Bovine papillomavirus, Feline leukemia virus, Gibbon leukemia virus, etc.
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