WHO Global Situational Alert System: a mixed methods multistage approach to identify country-level COVID-19 alerts
Rattachement africain : ch, Congo, Égypte, in, us, dk, ph, se. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
BACKGROUND: Globally, since 1 January 2020 and as of 24 January 2023, there have been over 664 million cases of COVID-19 and over 6.7 million deaths reported to WHO. WHO developed an evidence-based alert system, assessing public health risk on a weekly basis in 237 countries, territories and areas from May 2021 to June 2022. This aimed to facilitate the early identification of situations where healthcare capacity may become overstretched. METHODS: The process involved a three-stage mixed methods approach. In the first stage, future deaths were predicted from the time series of reported cases and deaths to produce an initial alert level. In the second stage, this alert level was adjusted by incorporating a range of contextual indicators and accounting for the quality of information available using a Bayes classifier. In the third stage, countries with an alert level of 'High' or above were added to an operational watchlist and assistance was deployed as needed. RESULTS: Since June 2021, the system has supported the release of more than US$27 million from WHO emergency funding, over 450 000 rapid antigen diagnostic testing kits and over 6000 oxygen concentrators. Retrospective evaluation indicated that the first two stages were needed to maximise sensitivity, where 44% (IQR 29%-67%) of weekly watchlist alerts would not have been identified using only reported cases and deaths. The alerts were timely and valid in most cases; however, this could only be assessed on a non-representative sample of countries with hospitalisation data available. CONCLUSIONS: The system provided a standardised approach to monitor the pandemic at the country level by incorporating all available data on epidemiological analytics and contextual assessments. While this system was developed for COVID-19, a similar system could be used for future outbreaks and emergencies, with necessary adjustments to parameters and indicators.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- WHO Global Situational Alert System: a mixed methods multistage approach to identify country-level COVID-19 alerts
- Date Crossref
- 01/07/2023
- Éditeur
- BMJ
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
World Health Organization pays non établi dans la noticeOrganisme public
-
World Health Organization Regional Office for Africa Congo (code pays fourni par la source)Organisme public
-
World Health Organization Regional Office for the Eastern Mediterranean Égypte (code pays fourni par la source)Organisme public
-
World Health Organization Regional Office for South-East Asia pays non établi dans la noticeOrganisme public
-
World Health Organization Regional Office for the Americas pays non établi dans la noticeOrganisme public
-
World Health Organization Regional Office for Europe pays non établi dans la noticeOrganisme public
-
World Health Organization Regional Office for the Western Pacific pays non établi dans la noticeOrganisme public
-
Stockholm University pays non établi dans la noticeUniversité ou école supérieure
-
WHO Health Emergencies Programme Cairo, Égypte (pays nommé en fin d’affiliation)Institution
-
Republic of Congo Brazzaville Brazzaville, Congo (pays nommé en fin d’affiliation)Organisation à but non lucratif
-
UNICEF pays non établi dans la noticeInstitution
World Health Organization, World Health Organization Regional Office for Africa (Congo) et World Health Organization Regional Office for the Eastern Mediterranean (Égypte), avec 8 autres affiliations. Pays d’affiliation : Congo, Égypte.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.