Communicable diseases Flashcards
Compare bacterial and viral diseases:
- bacteria divides rapidly by splitting in two snd produces toxins which affect our body and make us feel ill
- viruses live and reproduce inside cells, damaging and destroying them
Explain how HIV leads to AIDS:
HIV attacks the immune system until it can no longer treat infections and cancer
AIDS is known as the late-stage HIV infection
Explain how plants are affected through direct contact?
infected plant material can infect an entire crop
Describe how vectors spread disease?
vectors transfer disease between infected and uninfected organisms
How can disease be spread through water?
drinking water containing sewage
Describe how lifestyle conditions increase the likelihood of disease spreading?
crowded conditions with no sewage system spread diseases more quickly
How can we prevent the spread of communicable diseases?
- washing hands after going to the toilet
- disinfectant in kitchen work surfaces
- keeping raw food away
- coughing or sneezing into a handkerchief
What are communicable disease?
transmission of disease from one organism to another
what are the symptoms of measles?
red skin rash and fever
How is measles spread?
inhalation of droplets
How is measles prevented in the UK?
improved living conditions and a vaccination programme for young children
Symptoms of HIV/AIDS:
mild flu-like illness
How is HIV/AIDS spread?
exchange of bodily fluids or direct sexual contact
How to treat HIV/AIDS?
antiretroviral drugs
Symptom of TMV?
mosaic pattern of discolouration on the leaves