Please help with the following questions -
1. Meningitis caused by Listeria monocytogenes is usually transmitted by ________
- food.
- water.
- aerosols.
- sexual contact.
- physical contact.
2. Preventing African sleeping sickness is nearly impossible because ________
- the trypanosomes change their surface glycoproteins evading the host immune response.
- the tsetse fly has a wide range and eradication is difficult.
- vaccines must target many antigens.
- All of the above
3. Shrinkage and lysis of neurons of the central nervous system; headache, fever, and sometimes brain necrosis and convulsions
- Bacterial meningitis
- Listeriosis
- Rabies
- Encephalitis
- Hansen's disease
- Tetanus
- Botulism
- Poliomyelitis
- Transmissable spongiform encephalopathies
- Chagas' disease