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Infectious diseases Typeit
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Viruses, bacteria, fungi and protists are microorganisms which can spread between individuals, causing disease. The pathogens can be spread by many methods, including in food, in water or in the air, or when an individual touches another individual, known as direct .
Viruses cause damage by living and reproducing inside within the body. One example of a viral disease is , which has symptoms of red skin rash and fever, and is spread by of droplets from sneezes and coughs. Another serious example of a viral disease is HIV, spread by sexual contact or exchange of body . In HIV, the virus attacks the body's system, which causes long-term problems for the individual, but it can be controlled with the use of drugs.
An example of a bacterium that often causes food poisoning and the symptoms of fever, cramps, vomiting and diarrhoea is . Bacterial diseases are often treated with antibiotics, but unfortunately, due to misuse and overuse, many strains have now become antibiotic .
Malaria is a disease caused by pathogens called . are the vectors of the disease, which makes them good targets for preventing the spread of malaria. This can be done by stopping them from breeding or by using to prevent them from biting people.
It is not just humans and animals that can suffer from diseases - rose black spot is an example of a common plant disease. The fungus responsible causes the formation of purple or black spots on the leaves of infected plants, making it difficult for them to , leading to stunted growth or death. However, the disease can be treated with .