Immunité collective - activities

Vaccination in the world Saturday April 27th, 2024: percentage of population vaccinated by country

As many countries have started their vaccination campaign against the coronavirus at the end of 2020, what is the percentage of vaccinated people compared to the total number of inhabitants for each country? Sortiraparis provides a daily update on the state of vaccination in the world. Click here to find out where we are at Saturday April 27th, 2024.

Covid: the fourth dose of vaccine is “not justified”, the Haute Autorité de Santé says

Head of Haute Autorité de Santé vaccinal technique commission Elisabeth Bouvet considers a fourth dose of Covid-19 vaccine is currently not necessary.

Covid: should Omicron be let spread free to put an end to the epidemic sooner?

By letting the Omicron variant spread, one could reach enough herd immunity to put an end to the pandemic in France. Is this strategy recommended by experts?

Covid: here is why the Omicron variant leaves us to expect the end of the pandemic

Despite the record-breaking number of Covid-19 contaminations in France, some people are hoping to exit the health crisis, the end of the pandemic, and the return to normal life in the coming months. The reason behind? The Omicron variant considered at this point more contagious but less dangerous. Here is more on the matter.

Covid: herd immunity to be reached soon thanks to Omicron? Olivier Véran’s hope

Interviewed by the JDD, Olivier Véran shared his optimism about the fifth wave that “could be the last” thanks to reinforced immunity of the population thanks to the Omicron variant.

Coronavirus: the epidemic to end in 2022? The WHO’s goal

Can one hope to see the coronavirus epidemic come to an end in 2022? Anyway, this is the goal of the World Health Organization. Director general Tedros Adhanom Ghebreyesus reminds the importance of stopping vaccinal inequity in the world for this scenario come true.

Covid: reaching herd immunity through the Delta variant? Mythical, a specialist says

As many countries are trying to reach herd immunity, Professor Sir Andrew Pollard – head of Oxford Vaccine Group – said this Tuesday August 10 that reaching herd immunity through the Delta variant is not possible since this mutation will keep infecting people vaccinated. “We don’t have anything that will (completely) stop that transmission”, the expert explained to The Guardian.

Covid: with Delta, “whether one will be vaccinated, or one will have been sick”, Karine Lacombe predicts

This morning on France Inter, infectious disease specialist Karine Lacombe claims that because of the high contagiousness of the Delta variant, “in France, whether one will be vaccinated, or one will have been sick”.

Coronavirus – Delta variant: a 90% to 95% immunity required to control the epidemic

Because of the Delta variant, the threshold to reach herd immunity has been reviewed upwards. According to the Scientific Committee, reaching 90% to 95% of vaccinees or contaminated people is necessary to hope and control the epidemic.

Covid: France can reach herd immunity from “late August”, Odile Launay thinks

As the vaccination campaign improves a bit more in France, infectious disease specialist and member of the vaccine Scientific Committee Odile Launay thinks the country can reach herd immunity against Covid by “late August”, on the condition the French “accept” vaccination.

Covid: why can people vaccinated even so catch the virus?

Covid-19 vaccines are a crucial asset amid the fight against the pandemic, and so far, our best ally to make things return to normal as soon as possible. Yet, these vaccines are not magic: they do not totally prevent people immunized from falling sick and do not eradicate the virus either.

Reopening from mid-May: Alain Fischer remains cautious and does not know if this goal could be met

Are come of places closed be able to reopen on May 15, as told this March 31 by Emmanuel Macron during his address? Entrusted with the French vaccinal strategy, Alain Fischer remains cautious because of the very active spread of the virus in the country. Invited on LCI this April 8, he said he does “not know if this goal could be met on May 15”.

Covid: why wearing a mask and complying with health guidelines even once vaccinated?

The vaccination campaign continues in France, and a question is often raised: why wearing a mask and complying with health guidelines even once vaccinated? Variants, contagiousness, immunity lifespan, some of you might be disappointed, and skeptics might be bothered.

Covid: towards herd immunity in Europe by mid-July? Pessimistic experts

As the vaccination campaign continues in many countries on the Old Continent, herd immunity in Europe could be reached around July 14, according to the European Commissioner for the Internal Market. At the same time, several scientists and experts on the subject are expressing doubts about the credibility of such a scenario, deploring a "risky gamble" on the part of the European authorities.

Covid: herd immunity by July 14th? “A reachable goal”, a doctor says

As Covid-19 epidemic markers are getting out of control in Île-de-France and caregivers are worried about being overwhelmed, the horizon of herd immunity by mid-July remains credible to some doctors. According to Hôpital Raymond Poincaré ICU head Pr. Annane, this goal is “reachable” provided vaccination is completed anywhere possible.

Coronavirus: variants make a big difference in herd immunity

The outbreak of variants highly impacts the fight against the coronavirus epidemic, questioning some scientific conclusions. Now, it takes 80% of immunized people to get herd immunity.

Covid: no herd immunity in 2021 despite vaccines, WHO says

This Monday January 11, 2021 WHO said that herd immunity to Covid-19 was not to happen this year, despite vaccines issued on the market and vaccine campaigns that started around the world.

Coronavirus: asymptomatic cases to lose their antibodies quicker, a study says

Discoveries as for coronavirus still go on... After the June 2020's Chinese study released on June 18 saying that people infected by the novel coronavirus but who showed no symptoms may develop a weaker immune response, a new British study rubs it in. Keep reading to find out more.

Coronavirus: preexisting immunity in half people never infected

Half the population is said to be already protected against coronavirus thanks to specific lymphocytes T. This is what a study published in the famous scientific Nature magazine finds.

Coronavirus: how long does immunity last?

How long does coronavirus immunity last? This is the question a study co-carried out by Chinese and American scientists released on medRxiv.org tried to answer to. Immunity is said to last between “not long” and “at least two months”.