THE HAGUE, Sept 1, 2022 (BSS/AFP) - The EU's drug regulator is on Thursday
expected to authorise the first Covid-19 vaccines for the Omicron variant,
although they do not target the latest strains.

The adapted vaccines made by Pfizer/BioNTech and Moderna will be discussed
during an extraordinary meeting of the European Medicines Agency (EMA).

European nations have been keen to rush through the new generation of jabs so
they can start booster campaigns ahead of a feared Covid surge this winter.

The two so-called "bivalent" vaccines protect against the earlier BA.1 strain
of Omicron, as well as the original Covid virus that emerged in China in
2019.

They do not however target the newer and more infectious BA.4 and BA.5 types,
which have emerged in recent months as the dominant strains worldwide.

"The aim of the meeting is to conclude the evaluation of the two
applications, if possible," the Amsterdam-based EMA said.

"We will communicate on the outcomes of the meeting on 1 September."

The agency has said it hopes to approve a separate Pfizer vaccine adapted for
the BA.4 and BA.5 types "in the fall".

The United States authorised its first anti-Omicron vaccines on Wednesday,
approving Pfizer and Moderna jabs that were adapted to tackle BA.4 and BA.5.

Britain authorised the Moderna vaccine for the BA.1 type in mid-August.

- New wave -

The 27-nation EU is currently still using the same coronavirus vaccines that
were approved nearly two years ago for use against the original strain.

While they offer some protection against newer variants, the race has been on
to produce jabs that also target the milder but more infectious Omicron
strains.

While previous "variants of concern" like Alpha and Delta eventually petered
out, Omicron and its sublineages have dominated throughout 2022.

The BA.4 and BA.5 types have in particular helped to drive a wave of new
cases of the disease in Europe and the United States in recent months.

Health authorities have therefore been keen to get updated vaccines as soon
as possible ahead of a feared new wave of the disease later this year.

All Omicron variants tend to have a milder disease course as they settle less
in the lungs and more in the upper nasal passages, causing symptoms like
fever, tiredness and loss of smell.

The EMA said its review of the adapted Pfizer and Moderna vaccines focused on
data from laboratory studies and from tests on the immune response against
the original strain and the Omicron variant.

The adapted vaccines under consideration Thursday "more closely match the
original strain and the BA.1 Omicron subvariant", the agency said.