Infectious Diseases

some antibiotics are used in animal feed to reduce disease.
What explains why the antibiotics shouldnot be used in the treatment of human diseases?

• human may be allergic to these antibiotics
• human cells may stop responding to these antibiotics 
• pathogenic bacteria may develop resistance to these antibiotics
• useful gut bacteria may be killed by these antibiotics

A village has improved its supply of clean water, sewage treatment, insect contol and milk pasteurisation.
Which disease, present in the village will not be reduced by these measures?

• HIV/AIDS
• cholera
• malaria
• tuberculosis

Which of the following two diseases are caused by virused?

• HIV/AIDS & cholera
• malaria & cholera
• measles & smallpox
• TB & HIV

Which statement explains why people suffering from malaria and people suffering from tuberculosis can both live in nothern Europe , but only tuberculosis can be passed onto the other people there

• anopheles mosquitoes only breed in tropical and sub-tropical areas
• antibiotics can be used to cure people with tuberculosis
• migrant workers can carry the disease with them
• tuberculosis bacteria cannot survive in sub-tropical and tropical areas

cholera is no longer common in many countries.
what is the reason for this?

• education of the citizens about the spread of the disease.
• routine vaccination by local health authorities
• treatment of water supplies and seperate  sewage treatment
• treatment of water to control mosquitoes

How is cholera transmited?

• food borne,water borne
• exchange of f;uids
• insect vecor 
• airborne droplets

which future development in vaccine production is most importantin the fight to eradicate measles in developing countries

• a combined vaccine to combat it other diseases
• a single vaccine , without the need for boosters
• a vaccine containing only live measles  viruses
• a vaccine produced by genetic engineering techniques

why is it necessary for a person with a bacterial infection to be told to take antibiotics at evenly spaced time intervals?

• to increase the concentration of antibiotic slowly to a level which is lethal to the bacteria
• to maintain concentration of antibiotic in the body which is lethal to the bacteria.
• to prevent the development of resistant strains of bacteria
• to select and kill the resistant strains of bacteria

40% of the world's population live in an area ehere malaria is threat to health in recentt years there have been many more cases in africa
what is the social factor letting the spread of malaria get out of control?

• an increase in drug resistant forms of malaria
• climate change
• difficulty in producing a vaccine
• migration of people because of wars

which disease is not likely to be passed directly from parents to child

• cholera
• malaria
• sickle cell anaemia
• tuberculosis