Volume 11, Number 11—November 2005
Research
Norovirus Outbreaks from Drinking Water
Table 2
Findings in suspected and identified norovirus outbreaks, Finland, 1998–2003
| Outbreak | Date | Presence of coliforms | Microbiologic findings (genotype)* |
|
|---|---|---|---|---|
| Patients | Water | |||
| E1, community | Mar 1998 | – | GI.6, GII.4 | GII.4 |
| E2, community | Apr 1998 | – | GI.6, GIId | – |
| E3, rental camp cottage | Jul 1998 | – | GI, GII | – |
| E4, camp on island | Aug 1998 | – | GII.5 | – |
| E5, community | Jan 1999 | – | GII.4 | – |
| E6, factory area | Feb 1999 | + | GI.3 | GI.3 |
| E7, community | Apr 1999 | + | GI.6 | GI.6 |
| E8, spa | Jul 1999 | + | GI.3 | GI.3 |
| E9, community | Mar 2000 | – | GI.3, GII | – |
| E10, private household | Aug 2000 | + | GI.3 | GI.3 |
| E11, community | Dec 2000 | + | GII.4 | GII.4, GII.1 |
| E12, farm (for guests) | Apr 2002 | + | GII.NA | GII.NA |
| E13, community | Oct 2002 | + | GIIb | – |
| E14, guest house | Feb 2003 | – | GII.4nv | GII.4nv |
| E15, community | May 2003 | + | GII.4nv | GII.4nv |
| E16, rental cottage | Aug 2003 | + | GI.6 | GI.6 |
*nv, new variant.
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