Fill in the blanks in each question. Diseases that can spread from one person to another are called

When we talk about diseases that can easily pass from one person to another, we classify them as contagious or communicable diseases. This type of disease can spread through various means such as physical contact, air, contaminated food or water, and even close proximity to an infected individual.

Common examples of contagious diseases include the common cold, influenza, chickenpox, and measles. These illnesses are caused by pathogens like viruses, bacteria, fungi, or parasites. In biology class 8, students learn about the various types of germs and how they cause diseases. It's crucial to understand that not all diseases are contagious. Some, like genetic disorders or those caused by malnutrition, can't spread from person to person.

How do contagious diseases make the jump from one person to another? This process is known as disease transmission and can occur in several ways.

Direct Contact

Diseases can spread through direct contact, such as touching or kissing someone who is infected.

Indirect Contact

This involves coming into contact with a surface that has been contaminated by an infected person, such as a doorknob or a shared toy.

Airborne Transmission

Some diseases are transmitted through the air. An example is tuberculosis, which can be inhaled when an infected person coughs or sneezes.

Vector-borne Transmission

Sometimes, insects or animals can carry diseases from one host to another. Malaria is a well-known example, where mosquitoes transmit the disease. In class 8 biology, students learn about these transmission methods to better understand how to prevent the spread of diseases.

In biology class 8, students begin delving into the complexities of living organisms, including human health. A significant part of the curriculum is dedicated to understanding the human body and the diseases that can affect it.

Students learn about various health practices to prevent disease, such as hand-washing, vaccinations, and safe food preparation. They discover the immune system's role in fighting off infections and how vaccines help in developing immunity. Educational materials often use interactive models and diagrams to illustrate the concepts of disease transmission and prevention, making it comprehensible for students to grasp these vital topics within the broader context of biology.