An infectious disease is ___________ .a)caused only by bacteriab)spre...
Infectious diseases are caused by any pathogenic microorganisms such as bacteria, viruses, parasites, or fungi. The diseases can be spread, directly or indirectly, from one person to another.
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An infectious disease is ___________ .a)caused only by bacteriab)spre...
Infectious Disease: Spread from Person to Person
An infectious disease is a type of illness that can be transmitted from one individual to another. These diseases are caused by pathogenic microorganisms such as bacteria, viruses, fungi, or parasites. They can be spread through various modes of transmission, including direct contact, airborne particles, contaminated surfaces, or vector-borne transmission.
Explanation:
Spread from Person to Person:
The correct answer to the given question is option B, which states that an infectious disease is spread from person to person. This means that the disease can be transmitted through direct contact with an infected individual, such as through respiratory droplets, bodily fluids, or skin-to-skin contact. Some common examples of infectious diseases that spread from person to person include the flu, common cold, tuberculosis, measles, chickenpox, and COVID-19.
Other Modes of Transmission:
While person-to-person transmission is the most common mode of spread for infectious diseases, it is important to note that there are other modes of transmission as well. These include:
1. Spread from Animal to Animal: Some infectious diseases can be transmitted between animals. For example, avian influenza (bird flu) primarily affects birds but can occasionally infect humans who come into close contact with infected birds.
2. Spread from Animal to Human: Certain infectious diseases can be transmitted from animals to humans. These are known as zoonotic diseases. Examples include rabies, Lyme disease, and Ebola virus disease.
3. Spread from Environment: Some infectious diseases can be acquired by coming into contact with contaminated surfaces or objects. For instance, bacteria like Salmonella or E. coli can be contracted by consuming contaminated food or water.
4. Vector-Borne Transmission: Certain diseases are spread by vectors, such as mosquitoes, ticks, fleas, or flies. These vectors can carry pathogens and transmit them to humans or animals. Examples of vector-borne diseases include malaria, dengue fever, Zika virus, and Lyme disease.
It is important to understand the mode of transmission for infectious diseases to implement appropriate preventive measures. These may include practicing good hygiene, such as regular handwashing, covering the mouth and nose when coughing or sneezing, avoiding close contact with infected individuals, and using insect repellents to prevent vector-borne diseases.
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