In vitro differentiation and pH sensitivity of field and cell culture-attentuated strains of transmissible gastroenteritis virus.

Abstract:

:Characteristics of four transmissible gastroenteritis (TGE) virus field strains (Miller, Purdue, Bl, and V203) and four cell culture-attenuated strains (Purdue, SH, CKp, and Bl) were studied to find methods of differentiation between the two groups of viruses. TGE field virus strains did not replicate as well as attenuated strains at 37 C and could not be passaged serially for more than four to six passages at 33 C. There were clear differences in plaque size when the strains were compared. Field strains had average plaque sizes ranging from 3.59 to 3.15 mm, whereas attenuated strains induced plaques that were larger than 4.2 mm. Variations were observed in stability of strains at pH 3.0. Field strains and cell culture-attenuated strains CKp-270 and SH-114 were reduced in titer by about 1 log10. A reduction of about 3 log10, however, was obtained with cell culture strains B1-300 and Purdue-113.

journal_name

Infect Immun

journal_title

Infection and immunity

authors

Hess RG,Bachmann PA

doi

10.1128/IAI.13.6.1642-1646.1976

subject

Has Abstract

pub_date

1976-06-01 00:00:00

pages

1642-6

issue

6

eissn

0019-9567

issn

1098-5522

journal_volume

13

pub_type

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