Communicable diseases

• Malaria is transmitted by a protist called Plasmodium.
• HIV weakens the immune system so a person with HIV is more likely to become infected with tuberculosis.
• When pathogens reproduce, they increase their numbers very quickly.
• Food is prepared in the kitchen, and to prevent the spread of disease it is important that hands are washed thoroughly before handling food
• Rose black spot is caused by a fungal pathogen.
• Pathogens (disease-causing organisms) include viruses, bacteria, fungi and protists.
• Food poisoning is caused by Salmonella bacteria. The bacteria are ingested along with food.
• Rose black spot is caused by fungal spores. The spores can be transported from plant to plant by the wind.
• HIV/AIDS compromises the body's immune system making it less able to fight infection.
• Chicken can carry Salmonella bacteria in their bodies. In the UK, they are vaccinated against Salmonella bacteria, which helps to prevent food poisoning in humans.
• Malaria presents with recurrent episodes of fever. In order to lessen the chance of being bitten, people should sleep under mosquito nets.
• Gonorrhoea is a sexually transmitted disease with symptoms of genital discharge and painful urination.
• When gonorrhoea, a sexually-transmitted, bacterial infection was first identified, it could be successfully treated with antibiotics (penicillin). However, over time resistant strains of the bacterium have appeared and antibiotics are less effective against these new strains.
• Rose black spot disease can be treated by spraying the infected plant with a fungicide. A fungicide is a type of pesticide that kills fungal pathogens.
• The HIV virus attacks the white blood cells, called lymphocytes, in our immune system.
• One if the main symptoms of Salmonella food poisoning is a fever (high temperature).
• The viral disease measles is spread by contact with saliva and mucus. For example, a child with measles can spread the virus to another child simply by talking to them.
• Destroying vaccinations is not a way to reduce the spread of disease. Doing this could increase the spread of disease.
• Fungicides are chemicals that kill fungi. A gardener might use a fungicide spray to kill a fungal disease on a plant.
• HIV cannot be transmitted from person to person by skin contact.
• Gonorrhoea is caused by a bacterium so can be successfully treated using antibiotics.
• Viruses are microorganisms that can only reproduce inside the living cells of other organisms