Skip to main content
. 2017 May 6;9(5):99. doi: 10.3390/v9050099

Table 1.

Estimated time of origin of the main porcine circovirus type 2 (PCV2) genotypes and earliest specimen retrieved.

Genotype Estimated Time of Divergence (Reference) Earliest Archived Tissue Identification
PCV2a 1966 (1945–1983) [60] 1962 [68]
1964 (1948–1974) [55]
PCV2b 1989 (1980–1995) [60] 1979 [69]
1973 (1952–1996) [55]
PCV2d 1986 (1971–1996) [58] Genbank Accession Number JX512856, 1999 from a healthy herd [52,58]