Comparative Serological Assays for the Study of H5 and H7 Avian Influenza Viruses

Table 1

IC₉₀-neutralizing antibody titres tested by pseudotype-based neutralization assays for chickens immunized with the Mexican-derived H5N2 strain.

IC90-neutralizing antibody titres
Sera no.	A/Vietnam/1194/04	A/ck/Egypt 1709-1/2007	A/ck/Egypt 1709-6/2008
4822/V09-1	2560–5120	>81920	160–320
4822/V09-3	2560–5120	20480–40960	80–160
4822/V09-4	320–640	1280–2560	40–80
4822/V09-5	2560–5120	10240–20480	80–160
4822/V09-6	2560–5120	20480–40960	320–640
4822/V09-7	2560–5120	>81920	640–1280
4822/V09-8	1280–2560	40960–81920	80–160
4822/V09-9	1280–2560	>81920	320–640
4822/V09-10	2560–5120	5120–10240	80–160
4822/V09-12	2560–5120	40960–81920	40–80
Range of titres observed	(320–5120)	(1280–81920)	(40–1280)