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

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

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Microorganisms and Disease
The "A" subunit of diphtheria toxin

binds host cell receptors found on heart cells
cause ADP ribosylation of a factor involved in protein synthesis
lysis macrophages with the release of cytokines
forms cAMP that leads to fluid accumulation

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