Why Are There Dangerous Ingredients in Vaccines

Vaccines contain ingredients that may seem dangerous but are essential for their effectiveness. The immune system naturally fights pathogens, but some are too strong. Vaccines introduce a weakened form of the pathogen to prepare the immune system. Formaldehyde is used to render pathogens harmless, while adjuvants like aluminum enhance immune response. Although these substances can be harmful in large amounts, vaccines contain them in safe doses. The risk of adverse reactions exists, but vaccines prevent more dangerous diseases.

What role do immune cells play when an unfamiliar pathogen invades the body?

How does vaccination prepare the immune system for real pathogen attacks?

What is formaldehyde's role in vaccines, and why is it considered dangerous in large doses?

Explain the function of adjuvants in vaccines.

What are the potential risks of not vaccinating against diseases like polio and measles?