Volume 10, Number 6—June 2004
Research
Epidemiologic Clues to SARS Origin in China
Rui-Heng Xu*, Jian-Feng He*, Meirion R. Evans†‡
, Guo-Wen Peng*, Hume E Field§, De-Wen Yu*, Chin-Kei Lee¶, Hui-Min Luo*, Wei-Sheng Lin*, Peng Lin*, Ling-Hui Li*, Wen-Jia Liang*, Jin-Yan Lin*, and Alan Schnur#1
, Guo-Wen Peng*, Hume E Field§, De-Wen Yu*, Chin-Kei Lee¶, Hui-Min Luo*, Wei-Sheng Lin*, Peng Lin*, Ling-Hui Li*, Wen-Jia Liang*, Jin-Yan Lin*, and Alan Schnur#1
Table 1
Month of onset of SARS in community cases and in healthcare workers, Guangdong, China, November 2002–April 2003a
| Month of onset | Community case contact history |
Healthcare worker (%) | Totalb | ||
|---|---|---|---|---|---|
| Yes (%) | No (%) | ||||
| Nov 2002 |
0 (0) |
3 (100) |
0 (0) |
3 (100) |
|
| Dec 2002 |
2 (11) |
12 (63) |
5 (26) |
19 (100) |
|
| Jan 2003 |
31 (18) |
87 (50) |
55 (32) |
173 (100) |
|
| Feb 2003 |
104 (14) |
419 (58) |
195 (27) |
718 (100) |
|
| Mar 2003 |
63 (20) |
197 (62) |
59 (18) |
319 (100) |
|
| Apr 2003 |
16 (9) |
129 (74) |
29 (17) |
174 (100) |
|
| Total | 216 (15) | 847 (60) | 343 (24) | 1,406 (100) | |
aSARS, severe acute respiratory syndrome.
bInformation was not available on contact history for 48 cases.
1Drs. Evans, Field, and Lee were consultants for the World Health Organization; they assisted in its Beijing office.
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