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Differential growth and transmission in cats of feline leukaemia viruses of subgroups A and B

✍ Scribed by Oswald Jarrett; Peter H. Russell

Publisher
John Wiley and Sons
Year
1978
Tongue
French
Weight
702 KB
Volume
21
Category
Article
ISSN
0020-7136

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✦ Synopsis

Abstract

The outcome of infecting cats with FeLV of subgroups A (FeLV‐A) or B (FeLV‐B) was different. After FeLV‐A infection, virus was quickly recovered from the blood and oropharynx of most animals. Following infection with FeLV‐B, only a small proportion of cats developed a viraemia, and this after a long interval. There was no evidence that FeLV‐B was transmitted by contact. The result of infecting cats with mixtures of FeLV‐A and B (FeLV‐AB) was that to a large extent each virus operated independently. FeLV‐A was recovered from the plasma first, in a high proportion of the cats, and FeLV‐B appeared later but not in all cats. There was evidence of interaction, however, in that the proportion of cats which were viraemic with FeLV‐B was greater following FeLV‐AB infection than after infection with FeLV‐B alone; also FeLV‐B was transmitted by contact from cats excreting FeLV‐AB. These results help to explain the apparent dependence of FeLV‐B on FeLV‐A under natural conditions and the frequency of occurrence of subgroups A and B in FeLV isolates.

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