Pathogens, Disease and their prevention
Pathogens are tiny living things that cause diseases. They are so small that you can only see them with a microscope.
Another name for them is germs. These germs can enter our bodies and make us sick.
Types of Pathogens and the Sickness They Cause
- Bacteria – These are tiny living things that grow fast and can cause diseases like typhoid, cholera, and tuberculosis.
- Viruses – These are even smaller than bacteria. They live inside our body’s cells and can cause sicknesses like HIV/AIDS, flu, and measles.
- Fungi – These are tiny plant-like germs that love to grow in damp places. They can cause skin problems like ringworm and athlete’s foot.
- Protozoa – These are tiny animal-like germs found in dirty food or water. They can cause malaria and stomach problems like dysentery.
- Worms – Some worms live inside the body and steal our food. They cause diseases like tapeworm and roundworm infections.
diseases caused by pathogens
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Measles – A viral infection that causes fever, cough, red eyes, and skin rash; spreads through the air.
- Malaria – Caused by a protozoan from mosquito bites; leads to fever, chills, and weakness.
- Pneumonia – Infection of the lungs caused by bacteria, viruses, or fungi; makes breathing difficult.
- Typhoid – A bacterial disease from dirty food or water; causes fever, weakness, and stomach pain.
- Cholera – Caused by bacteria in contaminated water; leads to watery diarrhea and dehydration.
- HIV/AIDS – A viral disease that weakens the immune system; spreads through blood or body fluids.
- Tuberculosis (TB) – A bacterial infection of the lungs; causes coughing, chest pain, and fever.
- Ringworm – A fungal skin infection that causes itchy, round rashes; spreads through contact.
- Dysentery – A protozoan or bacterial infection of the intestine; causes diarrhea with blood.
- Polio – A viral disease that can cause paralysis; mostly affects children and spreads through dirty hands or water.
- Tapeworm – Caused by worms living in the intestines; leads to stomach pain and poor growth.
- Hepatitis B – A viral infection of the liver; spreads through blood and body fluids.
- Athlete’s Foot – A fungal infection between the toes; causes itching and cracked skin.
- Schistosomiasis – A worm infection from dirty water; causes blood in urine or stool.
- Whooping Cough – A bacterial disease that causes severe coughing fits; spreads through droplets.
How Do These Germs Spread?
- Through the air – like when someone with a cold coughs or sneezes near you.
- Through dirty water or food – if you eat or drink something contaminated.
- By touching – things like dirty hands, door handles, or shared items.
- Through animal or insect bites – like mosquitoes that cause malaria.
- From one person to another – by hugging, shaking hands, or using the same towel.
How Does the Body Fight Germs?
- The skin blocks germs from getting in.
- Tears, saliva, and mucus help wash away germs.
- White blood cells inside our body fight and destroy the germs.
- The body can also make antibodies, which are like special soldiers that attack specific germs.
How to Prevent and Control Diseases
- Keep yourself clean – Bathe daily, brush your teeth, and wash your hands often (especially before eating or after using the toilet).
- Keep your surroundings clean – Throw away waste properly, avoid dirty water around your house, and make sure drains are not blocked.
- Eat and drink safely – Boil your water if it’s not clean. Wash fruits and vegetables well. Always cover your food.
- Use mosquito nets and insect sprays – to avoid bites from mosquitoes that spread malaria.
- Take your vaccines – Vaccines help your body learn how to fight serious diseases before you even get them.
- Stay away from people who are sick – and if you’re sick, rest and avoid passing it to others.
Why Is It Important to Control Germs?
- To protect your health and that of your family.
- To stop the spread of deadly diseases.
- To help everyone live longer and healthier lives.
- To avoid outbreaks and sickness in your school or community.