INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2011 - 2012 Season

Week	A(H1)	A(2009 H1N1)	A(H3)	A(unable to sub-type)	A(Subtyping not performed)	B	Total # Tested	% Positive
40	1	3	7	0	9	9	2501	1.16
41	0	0	5	0	0	7	2227	0.54
42	0	0	3	0	8	7	2213	0.81
43	0	0	3	0	13	1	1798	0.95