None of the migratory birds reacted with 4 antigen, units in the 1:20 
dilution. 
All of the HI test positives were in Egyptian resident birds (Tables 2-4). 
Galllnula chloropus and 2 Fulica atra i nhibited either or both Sindbis 
and Y-62-33. Titers were generally higher to Sindbis. These are aquatic rails 
of North Egypt. 
Fifteen sera reacted with group B viruses including yellow fever, Wessels- 
bron, Israel turkey, Zika, Ntaya, and West Nile. Ten of these were from F^. 
atra , 3 from chloropus , and 1 each from Tyto alba (owl) and Bubulcus ibis . 
It was not possible in most cases to distinguish which group B virus was re¬ 
sponsible for the HI reactions. The 3 chloropus sera reacted specifically 
in the 1:20 dilution with yellow fever virus. Overall, 12/24 _F. atra and 18/70 
chloropus sera were positive. 
Neutralization tests of 117 sera of birds of the 1966 fall migration using 
100 LD 50 of Bahig virus were negative. These sera were from Falco (5), Upupa 
(5), Oriolus (45), Cotumix (4), Lanius (40), Cuculus (1), Jynx (3), Acrocephalus 
(2), Sylvia (11), and Muscicapa (1). 
One thousand, thirty-six individual or pooled plasmas from migratory birds 
collected in Cyprus during the spring 1968 migration were tested for HI antibody 
to 10 arboviruses (chikungunya, Sindbis, West Nile, Wesselsbron, yellow fever, 
Bunyamwera, Tahyna, Ingwavuma, EgB90, and EgAnl047-61). Table 7 lists the plasmas 
collected, by bird species. Positive HI reactions were found with Sindbis 
(group A), West Nile (group B), Ingwavuma (group Simbu), and with both Bahig and 
Matruh. 
Sindbis. Sindbis HI antibody (Table 9) was found in Coracias garrulus (1), 
Jynx torquilla (1), Upupa epops (1), Lanius collurio (2), Sylvia communis (1), 
One plasma was not tested, hence the difference in total numbers tested and 
collected. 
71 
