Studies on Parainfluenza Type 2 and 4 Viruses Obtained from Patients with Common ColdsBr Med J 1969; 1 doi: http://dx.doi.org/10.1136/bmj.1.5642.471 (Published 22 February 1969) Cite this as: Br Med J 1969;1:471
- D. A. J. Tyrrell,
- M. L. Bynoe
Four agents which were obtained from adults with common colds were cultivated and identified—one was influenza type B and the others were parainfluenza viruses of types 2 and 4. Their cultivation was assisted by the use of organ cultures of human embryo tracheal or nasal epithelium. They infected and caused typical common colds in volunteers.