Volume 11, Number 3—March 2005
Dispatch
SARS-associated Coronavirus Transmitted from Human to Pig
Weijun Chen*†1, Minghua Yan‡1, Ling Yang*1, Boliang Ding‡, Bo He†, Yingzhen Wang‡, Xiuli Liu‡, Chenhui Liu*, Hui Zhu‡, Bo You†, Shengyong Huang†, Jiangguo Zhang*, Feng Mu*†, Zhao Xiang*§, Xiaoli Feng*, Jie Wen*†, Jianqiu Fang*†, Jun Yu*, Huanming Yang*, and Jian Wang*†
Table 2
Cross-neutralization tests for severe acute respiratory syndrome (SARS)–associated coronavirus*
| Virus strains | Sera (ND50) |
|||||
|---|---|---|---|---|---|---|
| S1 | S2 | S3 | H1 | H2 | H3 | |
| TJF | 1:160 | 1:640 | <1:10 | 1:1,280 | 1:640–1,280 | <1:10 |
| BJ01 | 1:160–320 | 1:640 | <1:10 | 1:640–1,280 | 1:320–640 | <1:10 |
*S1 and S2 were sera from swine that were positive by enzyme-linked immunosorbent assay (ELISA). H1 and H2 were sera from SARS patients. H3 and S3 were controls from sera of a normal human and an ELISA-negative pig, respectively. ND50, 50% neutralization dose.
