How Do Infections Spread Rph Learn how infectious diseases are caused by bacteria, viruses, fungi or parasites and how they can be spread by direct or indirect contact, insect bites or contaminated food. find out the symptoms, risk factors, complications and prevention tips for various infections. How infection works. there is a close connection between microbes and humans. experts believe about half of all human dna originated from viruses that infected and embedded their nucleic acid in our ancestors’ egg and sperm cells. microbes occupy all of our body surfaces, including the skin, gut, and mucous membranes.
Bring Home The Blue Not The Flu Grades 6 8 Learn how bacterial infections can affect your skin, lungs, brain, blood and other parts of your body. find out how they spread through airborne, contact, vector or vehicular transmission and how to prevent them. Learn about the different types of direct and indirect contact that can spread infectious diseases, such as malaria, measles, and respiratory illnesses. find out how to prevent disease transmission with simple hygiene and safety measures. Infectious diseases are illnesses caused by harmful agents (pathogens) that get into your body. the most common causes are viruses, bacteria, fungi and parasites. infectious diseases usually spread from person to person, through contaminated food or water and through bug bites. some infectious diseases are minor and some are very serious. Once a person is infected with a virus, their body becomes a reservoir of virus particles which can be released in bodily fluids – such as by coughing and sneezing – or by shedding skin or in.
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