Canine caliciviruses of four serotypes from military and research dogs recovered in 1963−1978 belong to two phylogenetic clades in the Vesivirus genus

Table 1 Antibody neutralization assays for the four canine calicivirus isolates

Rabbit antibody	Neutralization titers				Dog Sera A/P^a	Serological prevalence
Rabbit antibody	3–68	W191R	L198 T	A128T	Dog Sera A/P^a	Arrival^a	Post^a
3–68	> 1024	16	< 4	< 4	< 4 / 32	14/21^c	14/21
W191R	< 16	16,384	< 16	< 16	< 4 / 64	6/30	5/30
L198 T	< 4	< 16	256	4	4 / na^b	8/29	8/29
A128T	< 4	< 16	< 4	256	< 4 / 16	20/31	21/31^d

^aA, arrival titers. P, post titers 14–21 days later
^bna, not applicable. Post (P) serum not available. Dog died soon after initial specimen collection
^cThe number of sera positive in neutralization assay for each CaCV isolate versus the total number tested
^dOne additional dog showed an increase in titer to A128T

ISSN: 1743-422X