US FDA considering approach that is similar to, but more stringent than, influenza strain changes, CBER Director Marks says. Meanwhile, vaccine developers face challenge of when to change antigens to get the best results, NIH’s Graham notes. As FDA and sponsors gain more experience with tweaking the vaccines to account for new coronavirus variants and strains, the process may be expedited further.
The US Food and Drug Administration is considering requiring immunogenicity studies in lieu of large efficacy trials that measure hard clinical outcomes in order to gain the agency’s sign off on tweaks to already authorized or approved COVID-19 vaccines that are updated to address new virus variants or strains.
These studies would likely be done in a few hundred people to make sure that the vaccines are trigging an...
Revised recommendation is based on most recent data on circulating strains in US, where KP.3 is now dominant. Novavax sticks with plans targeting the JN.1 ‘parent strain.’
US FDA’s 2015 accelerated approval called for confirmatory trial completion by 2018, but study initiation was delayed. Completed in 2022, the trial not only verified Bexsero’s clinical benefit, it also served as the pivotal study for GSK’s pentavalent meningococcal vaccine candidate.
To help sponsors developing candidate mpox vaccines, the World Health Organization will soon be finalizing guidance on the preferred and minimum characteristics these products must satisfy regarding efficacy, dose regimen and other aspects to secure regulatory approval.
The WHO’s emergency committee has warned of a lack of understanding of the epidemiology of mpox, the limited availability of vaccines, and the complexities of donations and procurement.
Revised recommendation is based on most recent data on circulating strains in US, where KP.3 is now dominant. Novavax sticks with plans targeting the JN.1 ‘parent strain.’
Pink Sheet reporter and editors discuss the US FDA’s changes to the COVID-19 vaccine indication and its revocation of the vaccine emergency use authorizations, as well as new vaccine coverage and reimbursement questions.
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