Covid today, last minute live | Two studies affirm that anticovid vaccines affect menstruation

• Health China prepares its booster vaccines with mRNA technology to fight omicron

• Covid Spain has already detected a first case of the 'Danish omicron'

With the

in "soft decline", Navarra has decided to extend the

while Galicia and La Rioja are going to lift them, and all three maintain the

as well as Andalusia and Valencian Community. Catalonia also extended the passport requirement and the limit of ten people in

for another 14 days after receiving the endorsement of the Superior Court of Justice last Thursday.

However, the Ministry of Health rules out further reducing the current seven-day

period , as some communities have suggested, given the high incidence that the sixth wave still maintains, whose incidence, despite dropping 73 points this Wednesday, remains very high. , in 3,194 cases, with 133,553

recorded in the last 24 hours and 215 deaths, 757 in the last week.

Incidence 470 accumulated by CCAA.

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Two studies affirm that anticovid vaccines briefly affect menstruation

Covid-19 vaccines can cause changes in menstruation in some women, but these changes are brief and minor compared to the natural variation in normal period cycles.

This is confirmed by two studies published this Wednesday by the British Medical Journal (BMJ) and whose conclusions are "reassuring", according to Victoria Male, a reproduction specialist at Imperial College London (United Kingdom), in a statement.

The expert, who has analyzed both works in an editorial for the BMJ, acknowledges that the preparations against covid-19 do affect the menstrual cycle, although their effects are not significant or long-lasting.

The first study looked at data from 3,959 women in the United States who logged at least six consecutive menstrual cycles on a tracking app.

Of that total, 2,403 were vaccinated and the rest joined the control group.

After accounting for other factors, the researchers found no change in menses after the first dose, while the second injection was associated with a 0.45-day delay.

The most obvious effects were seen in 358 women who received the full vaccination course during the same menstrual cycle, causing their next period to be 2.32 days late.

Within this group, 11% experienced a change in cycle length of more than eight days, compared to 4% in the unvaccinated group.

Victoria Male stresses that all groups returned to normal within two menstrual cycles after vaccination.

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Moderna begins clinical trials of the vaccine against the omicron variant

The Modern pharmaceutical company announced this Wednesday that it has begun clinical trials in the second phase of its study of a booster dose of its specific vaccine to combat the omicron variant of covid-19.

In a statement, Moderna explained that the second phase of the study will include, on the one hand, about 300 participants who have already received two doses of the vaccine and, on the other hand, another 300 subjects with the full schedule and a booster dose.

On the other hand, on the effectiveness of the current vaccine, Moderna indicated that according to a study, the neutralization of omicron six months after the third dose of 50 micrograms of the mRNA-1273 vaccine decreased, but remained detectable in all participants in the test. .

"We are reassured by the persistence of antibodies against omicron six months after the currently authorized booster of 50 micrograms of mRNA-1273", stressed the chief executive of the pharmaceutical company, Stéphane Bancel, who highlighted the importance of a booster specifically targeting omicron for the threat long-term evidenced by the variant of evading immune defenses.

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