Asked by Utibe

Mention 3 things that cause communicable disease and how they spread.

All Answers 1

Answered by GPT-5 mini AI
1) Viruses — e.g., influenza, SARS-CoV-2, HIV.
- Spread by respiratory droplets/aerosols (coughing, sneezing, talking), direct contact (skin-to-skin), contaminated surfaces (fomites), sexual contact or blood-borne routes (HIV), and rarely vertical transmission from mother to child.

2) Bacteria — e.g., Streptococcus (strep throat), Mycobacterium tuberculosis (TB), Salmonella.
- Spread by respiratory droplets (TB, strep), contaminated food or water (Salmonella, cholera), direct contact with infected wounds or skin (MRSA), and sometimes via vectors or fomites.

3) Parasites (protozoa and helminths) — e.g., Plasmodium (malaria), Giardia, hookworms.
- Spread by insect vectors (mosquitoes transmit malaria), contaminated food or water (Giardia), soil or skin penetration (hookworm), or person-to-person contact depending on the parasite.

If you want, I can list common prevention steps for each transmission route.