Table 2.

Vaccine-derived poliovirus strains detected in Egypt by environmental surveillance from 2004 to 2010

Specimen code	Collection date (day-mo-yr)	Sampling site	Serotype	% nt divergence from Sabin straina
EGY04/E428/V2	23-11-2004	Menoufia	2	0.66
EGY05/E136/V1	14-04-2005	Damanhour, Beheira	2	1.22
EGY05/E483/K218	17-12-2005	Aleshreen, Giza	2	0.66
EGY06/E223/VR1	14-06-2006	Fayoum	2	0.66
EGY07/E124/V1	30-03-2007	Al Hagana, Cairo	2	0.66
EGY07/E276/V2	21-07-2007	Aswan	2	0.78
EGY07/E277/VR2	23-07-2007	Hurghada, Red Sea	2	0.78
EGY07/E310/V2	21-08-2007	Aswan	2	0.66
EGY07/E432/K44466	06-12-2007	Damanhour, Beheira	2	1.55
EGY08/E110/V1	07-04-2008	Damanhour, Beheira	2	1.66
EGY08/E422/K626401	16-12-2008	Alsaf, Cairo	2	0.66
EGY09/E360/V3	15-09-2009	Al Hagana, Cairo	2	0.66
EGY10/E42/V1	07-02-2010	Helwan, Altebeen, Cairo	1	1.10

^ant, nucleotide.