The United States of America recommended its citizens to avoid traveling to 10 countries due to the spread of the Corona virus, while a British study revealed the results of vaccination with two different doses.

The will of the State Department for American citizens included France and Portugal, although they are among the countries with the best vaccination rates in Europe, in the midst of a new epidemic wave in the old continent.

In its new bulletin, the US Department raised the warning level against travel to France in particular to the fourth level, the highest, with the approach of Christmas and New Year, amid the outbreak of the mutant Omicron.

The Centers for Disease Prevention and Control - the main health authority in the United States - stated that "given the current situation (associated with Covid-19) in France, even fully vaccinated travelers can be at risk of contracting and transmitting mutant mutants."

The list of countries concerned with the warning issued by the Centers for Disease Prevention and Control - in addition to France and Portugal - Cyprus, Andorra and Liechtenstein in Europe, as well as Jordan and Tanzania, and the Ministry of Foreign Affairs added to this list Mali and the Fiji Islands, both of which announced on Monday the registration of the first Omicron infection.


Vaccination with two different doses

A British study on vaccination with two different doses of corona vaccines revealed that people who received a first dose of the “AstraZeneca” or “Pfizer-BioNTech” vaccine, and then followed that with a second dose of the “Moderna” vaccine after 9 For weeks, their immune response was stronger than others, according to findings published on Monday.

"We've found a really good immune response... and it's actually stronger than getting the two doses of AstraZeneca," Matthew Snape, a professor at Oxford University, told Reuters.

The results of the study give hope to poor and middle-income countries that may need to give their citizens doses of vaccine produced by different companies in the event of instability or near exhaustion of their supplies of vaccines.

The study, which included 1070 volunteers, also revealed that a first dose of the "Pfizer-Biontech" vaccine, followed by a second dose of the "Moderna" vaccine, gives a better result than the two doses of the "Pfizer-Biontech" vaccine.

According to the study, which was published in the medical journal "The Lancet", there are no safety concerns.


Recovered plasma

For its part, the World Health Organization recommended not using the blood plasma of those recovered from Covid-19 to treat patients, and said that there is no evidence that it improves their chances of survival or reduces the need for artificial respiration.

The idea of ​​plasma treatment with the blood of those recovering from Covid-19 is based on the fact that the antibodies to the Corona virus in it can neutralize the virus and thus prevent it from multiplying and stop tissue damage in patients.

Several studies of plasma from blood recovered from Covid-19 have not demonstrated any clear benefit in patients with severe symptoms.

The World Health Organization said on Monday that this method of treatment is expensive and wastes a lot of time.

Statistics

Aggregated data showed that the total number of coronavirus infections around the world was approaching 266 million as of Tuesday morning, while the number of vaccine doses that had been administered exceeded 8 billion doses.

The latest data available on the Johns Hopkins University website showed that the total number of deaths rose to 5 million and 262 thousand in the world.

The data indicated that the total number of anti-Corona vaccines that were administered worldwide exceeded 8 billion and 220 million doses.

In Britain alone, the health authorities recorded 51,746 new cases of Corona virus during the past 24 hours, and 46 new deaths were recorded, according to data from the American Johns Hopkins University today, Tuesday.

This brings the number of confirmed infections in Britain to 10,575,062, and deaths to 146,101 cases.

As for Italy, it recorded 9,494 new infections with the Corona virus during the past 24 hours, in addition to 92 new deaths, according to data from Johns Hopkins University.

For its part, the Ministry of Health in India said today, Tuesday, that it had recorded 6,822 new cases of Covid-19 and 220 deaths within 24 hours.

In China - where the virus first appeared in December 2019 - the National Health Committee announced today, Tuesday, that 94 new confirmed cases of the Corona virus were recorded yesterday, up from 61 the previous day.