Pathogens and Disease 0.0 / 5 ? BiologyInfection and ResponseGCSEAQA Created by: Aguilucha22Created on: 16-10-16 21:06 How is HIV spread? It is spread by sexual contact or exchange of body fluids, e.g. it can be transmitted in blood when drug users share needles. 1 of 5 What happens if HIV is not treated? The virus enters the lymph nodes and attacks the body's immune cells. 2 of 5 What is AIDs? Later stage of HIV, it is when the body's immune system is damaged and cannot fight off other infections or cancers. 3 of 5 What can bacteria do? They can damage cells directly or produce toxins that damage tissues. 4 of 5 What is Salmonella? It is a type of food poisoning caused by bacteria 5 of 5
Comments
No comments have yet been made