EFFECT OF SEWAGE TREATMENT ON RECOVERY OF POLIOVIRUS FOLLOWING MASS ORAL IMMUNIZATION
NAVAL MEDICAL RESEARCH UNIT NO 4 GREAT LAKES IL
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Activated sludge sewage treatment process was found to be far superior to trickling filtration for removal of trivalent oral polioviruses. Excretion of such viruses was observed to continue for at least 56 days after vaccination. Considerable variation in recovery of virus Types I and II was observed in the two different populations. Chlorination did not eliminate virus recovery.
- Medicine and Medical Research