Abstract
On 27 December 2019, the French Public Health Agency identified a large increase in the number of acute gastroenteritis and vomiting visits, both in emergency departments and in emergency general practitioners’ associations providing house-calls. In parallel, on 26 and 27 December, an unusual number of food-borne events suspected to be linked to the consumption of raw shellfish were reported through the mandatory reporting surveillance system. This paper describes these concomitant outbreaks and the investigations’ results.
Highlights
On 27 December 2019, the French Public Health Agency identified a large increase in the number of acute gastroenteritis and vomiting visits, both in emergency departments and in emergency general practitioners’ associations providing house-calls
As the increased activity observed through the syndromic surveillance system was concomitant with a large increase in foodborne event outbreaks (FEO) suspected to be linked to the consumption of raw shellfish, the events appear to be related
Compared with human-to-human transmission which would have been characterised by greater spread in the curve; (ii) the timing of the peaks during the Christmas and New Year holiday period when oysters are more commonly consumed in France; (iii) the increase primarily concerned people 15 years of age and over, individuals who are more likely to eat shellfish than children
Summary
GP visits - 15-74 years of age GP visits - ≥ 75 years of age % GP visits - ≥ 15 years of age Percentage of GP visits for vomiting among total activity (%). Number of GP visits for vomitng (n) 1 Dec 3 Dec 5 Dec 7 Dec 9 Dec 11 Dec 13 Dec 15 Dec 17 Dec 19 Dec 21 Dec 23 Dec 25 Dec 27 Dec 29 Dec 31 Dec 2 Jan 4 Jan
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