Microorganisms and Disease
The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is

formalin-inactivated viruses
heat killed virus
live attenuated strains of all three immunological types
small dosage of wild-type live viruses

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Microorganisms and Disease
What is common in catheters and ventilators?

They are used primarily in neonatal intensive care units
They bypass important defenses of the body
Bacteria responsible for associated infections are usually susceptible to antibiotics
They predispose patients to viral rather than bacterial infections

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