Many critical questions remain about the effectiveness of COVID-19 vaccines in real-world settings. These questions can only be answered in post-introduction vaccine effectiveness studies.This guidance document outlines an approach to leverage existing surveillance systems for Severe Acute Respirato...ry Infection (SARI) to estimate COVID-19 vaccine effectiveness (VE) in preventing SARI associated with laboratory-confirmed SARS-CoV-2 using existing SARI surveillance systems. The approach uses the test-negative design to evaluate VE; cases are SARI patients who tested positive for SARS-CoV-2, and controls are SARI patients who tested negative for SARS-CoV-2.
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On the 9 February 2021, Africa CDC convened a special session of the Africa Task Force for COVID-19 to review existing data and evidence and recommend
MEDBOX Issue Brief no.9 ,1 Febr. 2021
orientations provisoires, première publication: 10 février 2021, mise à jour : 21 avril 2021, dernière mise à jour : 30 juillet 2021
A practitioner’s guide to the principles of COVID-19 vaccine communications.
The factors that lead people to make choices to take vaccines are nuanced and affected by how they see the world, their perceptions of the choices people like them will make, who they trust, their perceptions of risk,... consistency of message and convenience of actually getting the vaccine.
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Smallpox eradication was certified in 1980. Mpox has been endemic in Central and West African countries since it was first detected in 1958 . It is a zoonosis; cases are often found close to tropical rainforests where various animals carry the orthopoxvirus that causes the disease. In endemic countr...ies, most mpox infections in humans result from a primary animal-to-human transmission. Human-to-human transmission can result from close contact with respiratory secretions, skin lesions of an infected person, or recently contaminated objects. Transmission can also occur via the placenta from mother to fetus or through close contact during and after birth.
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Rabies is fatal, vaccine-preventable disease responsible for an estimated 59,000 human deaths each year. Most cases are transmitted by dogs, and most deaths occur in underserved populations in Africa and Asia. Approximately 40% of deaths occur in children.
The position papers are intended for use by national public health officials and managers of immunization programmes. They may also be of interest to international funding agencies, vaccine advisory groups, vaccine manufacturers, health professionals, researchers, the scientific media and the genera...l public.
Les notes de synthèse s’adressent aux responsables nationaux de la santé publique et aux administrateurs des programmes de vaccination, mais elles peuvent également présenter un intérêt pour les organismes internationaux de financement, les groupes consultatifs sur la vaccination, les fabricants de vaccins, les professionnels de la santé, les chercheurs, les médias scientifiques et le grand public.
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These WHO interim recommendations on the use of the Pfizer – BioNTech BNT162b2 vaccine against Covid-19 were developed on the basis of advice issued by the Strategic Advisory Group of Experts on Immunization (SAGE) and the evidence summary included in the background document referenced below.
fir...st issued 8 January 2021, updated 15 June 2021, updated 19 November 2021, updated 21 January 2022, updated 18 August 2022. Available in other languages https://apps.who.int/iris/handle/10665/361720
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Interim guidance, 26 October 2021
This interim guidance has been developed on the basis of the advice issued by the Strategic Advisory Group of Experts (SAGE) on Immunization at its meeting on 5 October 2021.
SAGE said moderately and severely immunocompromised persons should be offered an addition...al dose of all WHO approved vaccines “since these individuals are less likely to respond adequately to vaccination following a standard primary vaccine series and are at high risk of severe COVID-19 disease.”
People aged 60 and older who received the Sinovac and Sinopharm vaccines should get a third dose too, the experts added, though use of other vaccines may also be considered depending on supply and access.
“When implementing this recommendation, countries should initially aim at maximizing 2-dose coverage in that population, and thereafter administer the third dose, starting in the oldest age groups”, they said.
SAGE has also reviewed a vaccine developed by Indian company Bharat Biotech and will issue a policy recommendation after WHO greenlights it for emergency use.
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“Guide to facilitate the implementation of the WHO/UNICEF “Guidance on developing a national deployment and vaccination plan for COVID-19 vaccines” for Africa
t contains action-oriented lists of critical topics to address and checklists tailored to the context of African Union Member States.
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The contents of this guide aim to guide the development of one comprehensive national deployment and vaccination plan, as proposed and outlined by the guidance – and underlines the need for countries to develop their vaccination plans.
This guide is not meant as a tool to assess deployment readiness. The recommendation to Member States is to use the VIRAT/VRAF 2.0 tool for that, which builds on the COVAX Vaccine Introduction Readiness Assessment Tool (VIRAT) and the World Bank’s Vaccine Readiness Assessment Framework (VRAF).
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