Chapter 5.4 Viral diseases Flashcards
How is the measles virus spread? and what symptoms does it cause?
Measles virus can be spread by droplet infection. It causes fever and rash and can be fatal. There is no cure. Isolation of patients and vaccination prevents spread.
What symptoms does HIV cause? what part of the body does it attack?
HIV initially causes flu-like illness. Unless it is successfully controlled with antiretroviral drugs the virus attacks the body’s immune cells. Late stage HIV and AIDS, occurs when the body’ s immune system is so badly damaged it can no longer deal with infections.
How is HIV spread?
HIV is spread sexual contact or by the exchange body fluids, such as blood, which occurs when drug needles are shared.
How is tobacco mosaic virus spread?
Tobacco mosaic virus is spread by contact and vectors. It damages leaves and reduces photosynthesis. There is no treatment. Spread is prevented by field hygiene and pest control.
Describe the link between HIV and AIDS.
HIV(Human Immunodeficiency Virus) is a virus that causes an infection, AIDS (Acquired Immunodeficiency syndrome) is a condition Contracting HIV can lead to the development of AIDS.
