New Covid vaccine study for 12 to 16-year-olds launches in Southampton

Researchers are testing the use of second doses in children

Researchers in Southampton are involved in a new Covid-19 vaccine trial for children
Author: Jason BeckPublished 20th Sep 2021

Researchers in Southampton are to begin a new Covid-19 vaccine trial looking at different vaccination schedules for young people.

Running at University Hospital Southampton NHS Foundation Trust, the Com-COV 3 study will test different vaccines used as a second dose in young people aged 12 to 16.

The study is open to 12-to-16-year-olds who have already received one dose of the Pfizer jab, as well as those who are yet to receive a COVID-19 vaccine.

Participants can either receive two Covid-19 vaccine doses in the study, in which case their first dose will be the Pfizer COVID-19 vaccine.

Alternatively, those who have already received a dose of the Pfizer vaccine through the NHS can be enrolled at the time of their second dose.

All participants will be randomly allocated at the time of the second dose to receive either a full dose or half dose of the Pfizer-BioNTech vaccine, a full dose of the Novavax vaccine or a half dose of the Moderna vaccine.

The study is single-blind and randomised, meaning participants will not know what second dose vaccine they are receiving.

Researchers will assess any side effects and immune system responses to these different vaccine combinations.

Those interested in taking part in the study can find out more and sign up via the study website: comcovstudy.org.uk

The study, which will recruit 360 volunteers across the UK, hopes to report initial results by December.

If the results are promising, regulators MHRA and JCVI would formally assess the safety and efficacy of any new vaccination process before advising whether it is rolled out to patients.

Dr Katrina Cathie, Consultant in General Paediatrics and Paediatric Research at University Hospital Southampton and local lead for the trial, said:

"We are really pleased to be able to offer local adolescents the opportunity to take part in this trial, looking at different COVID-19 vaccines used as a second dose.

"Currently healthy 12-17 year olds are being offered a single Covid-19 vaccine in the NHS.

"The results from this trial are expected around Christmas and will directly inform decisions about the roll-out of a second dose of a COVID-19 vaccine in this age group in the spring.

"In Wessex we are looking for 90 young people aged 12-16 years who can attend Southampton hospital for 5-6 study visits over the next year, primarily after school and at weekends to avoid disruption to schooling.

"We have had brilliant responses and support from the public taking part in many other Covid-19 vaccine trials in the last 18 months and we have no doubt there will be significant interest in this study from our local population in Wessex."

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