Some common communicable diseases are cold, flu, chickenpox, measles, tuberculosis, cholera, dengue and typhoid. These spread through air, water or contact and are caused by bacteria, viruses or parasites. Class 8 Science Grade 8 Chapter 3 Health: The Ultimate Treasure question ...
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It is always better to stop a disease before it happens. Good habits like hygiene, vaccination and a healthy lifestyle prevent illness. This saves money, time and suffering compared to treating a disease. Class 8 Science Curiosity Grade 8 Chapter 3 ...
Yes, the WHO is a global organization that works to keep people healthy. It provides health guidelines, supports vaccination, tracks diseases and helps countries fight health problems like COVID-19 and other outbreaks. class 8 science chapter 3 health the ultimate treasure ...
The body remembers the pathogen from the first attack and creates special memory cells. When the same germ attacks again, the immune system responds quickly and strongly, protecting the body more effectively. Class 8 Science Curiosity Textbook Chapter 3 Health – ...