Norwalk
virus is seemingly ubiquitous in the community. It has a strike rate
of about 50% and is spread via the faecal-oral route from person to
person. Vomiting can be phenomenal and very rapid in onset.
One of the explosive vomits can leave a mist of vomit particles with 10 million virus particles. Just ten viruses ingested by a susceptible person is enough for them to become infected. Viruses may be viable for ten days after vomiting.
Thankfully, Norwalk virus infection is over quickly (within 24 to 48 hours) and, apart from feeling washed out, there are no long term problems. In someone's home, supportive care (with an understanding that at least half of their household might come down with it too) is all that is required.
Norwalk in an institutional setting like a large residential care home or a hospital can be horrendous.
In the event of a suspected outbreak, measures will be taken to improve hygiene and to ensure that all vomit/faeces are deep cleaned (particles may exist for up to 10 days). In the case of a hospital outbreak:
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Movement of patients and staff will be restricted; |
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Visitors will be advised of the situation and gently persuaded of the wisdom of staying away. Certainly children, pregnant women and anyone not feeling well (especially if they have D and/or V); |
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Visitors will be required to wash their hands on entry to the ward; |
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Visitors will be restricted from visiting any one else when they are in hospital |
Previous outbreaks within Somerset Coast:
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Poole Ward, Bridgwater Hospital. Oct 2002 |
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Butlins Holiday Resort Minehead. Summer 2002 |
Previous outbreaks elsewhere in the NHS in Somerset:
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Weston General Hospital. Winter 2002/03 |
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Taunton Community Hospital. Winter 2002/03 |
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Yeovil District Hospital. Autumn 2002 |