Table 1. Agglutination titers for RHDV (Ast/89) and RHDV-N11, by human blood type, Spain.

Virus	Human blood type†
	O	A	B	AB
RHDV (Ast/89)	32,768	16,384	131,072	131,072
RHDV-N11	<2	<2	2,048	2,048

*RHDV, rabbit hemorrhagic disease virus.
†0.5% in phosphate-buffered saline at 4°C.