By droplets from an infected persons sneeze or cough
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What are symptoms of measles?
Red skin rash, and signs of fever ( a high tmperature)
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What happens if there are complications with measles?
They can be serios or even fatal
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What can measles sometimes lead to?
Pneumonia ( a lung infection) or a bran infection called encephalitis
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When are most people vaccinated against measles?
When they are young
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What is HIV?
A virus spread by sexual contact, or by exchanging bodily fluids such as blood
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How can blood be exchanged?
When people share needles when taking drugs
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What does HIV initially cause?
Flu-like symptoms for a few weeks. After, the person doesnt then experience any symptoms for several years. During this time HIV can be controlled with antiretroviral drugs
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How can you control HIV?
By using antiretroviral drugs, these stop the virus replicating in the body
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What does the HIV virus attack?
The immune system
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What happens if the body's immune system is badly damaged
It cant cope with other infections or cancers, at this stage HIV is known as late stage HIV infection or AIDS
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What is Tobacco mosaic virus (TMV)
A virus that affects many species of plants eg tomatoes
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What does Tobacco mosaic virus (TMV) cause?
A mosaic pattern on the leaves of the plants - parts of the leaves become discoloured
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What does the discolouration mean?
The plant cant carry out photosynthesis, so the virus affects growth
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What is rose black spot?
A fungus that causes purple or black to develop on the leaves of rose plants.
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What is a result of rose black spot?
The leaves turn yellow and drop off
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What is another result of rose black spot?
Less photosynthesis can happen, so the plant doesnt grow very well
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How does rose black pot spread?
Through the enviroment in water or by the wind
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How can gardeners treat the disease?
By Using fungicides and by ********* the plant of its affected leaves
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How can you prevent rose black spot from being spread to other rose plants?
The leaves need to be destroyed so the fungus cant spread to other rose plants
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What is malaria?
A disease caused by a protist
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Where does part of the malarial protist's life cycle take place in?
Inside the mosquito
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What are the mosquitoes roles in malaria?
They are vectors, they pick up the malarial protist when they feed on and infected animal
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What happens when the mosquito feeds on an infected animal?
It infects it by inserting the protist into the animal's blood vessels
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What does malaria cause?
Repeating episodes of fever - it can be fatal
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How can the spread of malaria be reduced?
By stopping the mosquitoes from breeding
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How can people be protected by mosquitoes?
By using insectides and mosquito nets
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Other cards in this set
Card 2
Front
How are measles spread?
Back
By droplets from an infected persons sneeze or cough
Card 3
Front
What are symptoms of measles?
Back
Card 4
Front
What happens if there are complications with measles?
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