Question

What are infectious diseases? The spread of infectious diseases is widely discussed. in detail .​

Answer 1

Explanation:

Infectious diseases commonly spread through the direct transfer of bacteria, viruses or other germs from one person to another. This can happen when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn't infected..

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Answer 2

Answer:

Infectious diseases are the health hazards caused by organisms such as viruses, bacteria, fungi, parasites.

Explanation:

General symptoms of infectious diseases:

• Coughing
• Fever
• Fatigue
• Muscle aches
• Diarrhoea

Causes of the infectious diseases by:

• Bacteria - single-celled organisms that are responsible for illnesses such as urinary tract infections(UTI), Tuberculosis (TB), strep throat. Hepatitis B, Dengue
• Viruses - Much smaller than bacteria, viruses can cause a number of diseases ranging from the common cold to AIDS, Ebola, Covid - 19.
• Fungi - Skin diseases, like athlete's foot, ringworm, Coccidioidomycosis (Valley fever), Jock Itch, Yeast infection are caused by fungi. Few fungi can infect the lungs or even the nervous system.
• Parasites - Infections caused by parasites are Guinea worm, schistosomiasis, amebiasis, giardiasis.

Spread of infections through direct contact:

• Person to person. Example - cough, cold, flu, AIDS, Ebola, etc.
• Animal to person. Example - Swine flu, Ebola, etc.
• Mother to the unborn child. Example - rubella, syphilis, Hepatitis B, AIDS, etc.

Spread of the infection through indirect contact:

• Insect bites. Example - mosquitoes - Malaria, Dengue.
• Food contamination. Example - Escherichia Coli

Hence, infectious diseases spread really fast and can be disastrous for mankind. Exmaple - Covid- 19.