Volume 16, Number 2—February 2010
Extensive Mammalian Ancestry of Pandemic (H1N1) 2009 Virus
|Common name (genus and species)||Virus titer*
|Chicken (Gallus gallus domesticus)||1.7 ± 0.5||<||<||<||<||<||0|
|Domestic duck (Anas platyrhynchos)||1.7 ± 0.5||<||<||<||<||<||0|
|Wild duck (Anas platyrhynchos)||1.3 ± 0.0||<||<||<||<||<||0|
|Quail (Coturnix japonica)||3.4 ± 0.9‡||<||2.0 ± 1.3‡||0.8 ± 0.9||1.3 ± 0.9||1.3 ± 0.9||33‡|
*dpi, days postinoculation; <, titer below limit of detection (<0.75 log10EID50/mL). Virus titers were determined in eggs and are expressed as the log10 50% egg infectious dose (EID50)/mL (8). Data are presented as means ± standard deviation of titers of positive samples (≥0.75 log10 EID50/mL).
†Percentage of contact birds from which virus was isolated.
‡p<0.05, by 1-way analysis of variance.
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