EXPERIMENTS ON INSECT TRANSMISSION OF THE VIRUS OF POLIOMYELITIS

C W Howard1, P F Clark

  • 1Laboratories of The Rockefeller Institute for Medical Research, New York.

Insights

The domestic fly can transmit the poliovirus for days externally and hours internally. Bedbugs can carry the poliovirus for seven days after feeding on infected monkeys.

Area of Science:

  • Virology
  • Entomology
  • Public Health

Background:

  • Poliomyelitis is a serious viral disease.
  • Understanding poliovirus transmission is crucial for prevention.
  • Insects and arthropods are potential vectors for infectious diseases.

Purpose of the Study:

  • To investigate the potential of various insects and arthropods to act as vectors for the poliovirus.
  • To determine the duration and viability of poliovirus within these vectors.

Main Methods:

  • Experimental exposure of domestic flies (Musca domestica), mosquitoes (Culex species), lice (Pediculus species), and bedbugs (Cimex lectularius) to poliovirus.
  • Monitoring the presence and viability of the poliovirus on the external body and within the gastro-intestinal tract of flies.
  • Assessing the uptake and maintenance of the poliovirus from infected monkey blood and spinal cord in mosquitoes, lice, and bedbugs.

Main Results:

  • Domestic flies (Musca domestica) can carry infectious poliovirus externally for days and internally for hours.
  • Mosquitoes (Culex species) and lice (Pediculus species) did not acquire or maintain infectious poliovirus from infected monkey sources.
  • Bedbugs (Cimex lectularius) acquired and maintained infectious poliovirus for up to seven days after feeding on infected monkey blood.

Conclusions:

  • Domestic flies and bedbugs show potential as mechanical or biological vectors for poliovirus transmission.
  • Mosquitoes and lice are unlikely vectors for poliovirus.
  • Further research into vector control strategies targeting flies and bedbugs may be important for poliovirus prevention efforts.