Will we need a booster of the Covid-19 vaccine?



Pfizer and its partner BioNTech said evidence was mounting that people’s immunity began to wane after being vaccinated. The companies pointed to real-world data released by Israel’s Ministry of Health, which showed that the effectiveness in preventing infections and symptomatic illnesses declined six months after vaccination, although protection against serious illness. and deaths remain very high.
Pfizer said it was resuming efforts to develop a booster dose that would protect people from the variants, adding that it would soon release data on a third dose of the vaccine and submit it to the Food and Drug Administration (FDA) for further information. United States, European Medicines Agency. (EMA) and other regulators. Other vaccine makers, including Moderna, AstraZeneca and Johnson & Johnson, have also said they are investigating the potential use of boosters, although they have not released any data showing decreased immunity.
But just hours after Pfizer’s announcement, the FDA and the U.S. Centers for Disease Control and Prevention (CDC) pushed back. In an unprecedented joint statement, they stressed that fully vaccinated people “do not need a booster at this time” and that unvaccinated people should “get vaccinated as soon as possible to protect themselves and their community. “.
The CDC said yesterday that there was “no evidence yet that immunity is starting to wane in people who have been vaccinated against the coronavirus early on.” Likewise, the EMA said it was “too early” to confirm whether a booster dose for the coronavirus vaccines will be needed.

Meanwhile, the World Health Organization (WHO) has urged wealthy countries not to administer third doses of coronavirus vaccines to their residents before people in other countries can even receive their first doses.

But some nations are already developing their stimulus plans. The UK, for example, said last month it could start rolling out a third dose for vulnerable people from September, in the hopes that it would prevent a winter spike in cases.

The WHO has said this is a dangerous approach because it could divert doses from the developing world. “How much of ‘this is a global crisis’ don’t we get? It is still a global crisis,” said Dr Michael Ryan, executive director of the health emergency program of the WHO. “There are people who want to have their cake and eat it, and then they make some more cake, and they also want to eat it,” he added.


Q: I am fully vaccinated. When should I still wear my mask?

A: With the Delta variant on the rise, several local health officials have encouraged even fully vaccinated people to wear masks indoors. The World Health Organization has issued similar guidelines, while the CDC has continued to say that vaccinated people do not need to wear masks in most circumstances.

To clear up the confusion over the masking, we turned to CNN medical analyst Dr. Leana Wen for her thoughts.

Wen said there are several factors at play here, including your health and the immunization status of members of your household. Immunocompromised people should wear a mask in all indoor environments where they might be exposed to unvaccinated people.

Another important factor is the level of coronavirus infection and the vaccination rate in your community, Wen said.

“The risk is cumulative. If you see unvaccinated people several times each day and there is a high level of community transmission in your area, your chances of getting a breakthrough infection after vaccination will increase. You can reduce this risk by wearing a mask. in the most at-risk environments, ”she said.

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Unvaccinated caregivers will not be paid in France

As Europe grapples with a growing number of coronavirus cases caused by the Delta variant, several countries are making vaccination compulsory for healthcare workers.

France and Greece both announced new vaccine requirements this week, following in the footsteps of Italy, which made vaccinations mandatory for healthcare workers in April. The UK government has previously said it will require injections for nursing home staff from October. France said those who refused would be suspended without pay.

But not all healthcare workers are happy with this decision. In Italy, several legal challenges launched by those who do not want to be vaccinated are heard this week. In the UK, a petition against plans to make vaccines mandatory has garnered more than 72,000 signatures.

French President Emmanuel Macron speaks with workers at a vaccine packaging factory.

COVAX signs deal for 550 million Chinese vaccines against Covid-19 amid questions over efficacy

COVAX, the vaccine sharing program designed to help poorer countries gain access to vaccines, has signed agreements with two Chinese pharmaceutical companies to purchase more than half a billion of their Covid-19 vaccines by the first half of next year, Gavi, the global vaccine alliance, announced Monday.

COVAX’s rollout was delayed earlier this year, after a coronavirus crisis in India prevented the country’s largest vaccine maker from delivering millions of vaccines on time, so the increase in supply is good news.

However, the announcement also comes as Chinese vaccines come under increasing scrutiny for their effectiveness. The Sinopharm and Sinovac vaccines have been validated by the WHO for emergency use, although trials so far show that they both have lower efficacy against Covid-19 than their mRNA counterparts.

The epidemic in Indonesia could be even worse than it looks

Nearly half of Jakarta’s residents may have contracted Covid-19, according to a health survey – more than 12 times the number of officially recorded cases in the Indonesian capital at the time the research was conducted.

The rise in the city comes as Indonesia – the world’s fourth most populous nation – faces a difficult stage in its battle against the pandemic, recording tens of thousands of daily cases and up to 1,000 deaths by day across the country in one of Asia’s worst epidemics.

Hospitals across the country, especially on the island of Java – where Jakarta is located – have been pushed to the brink by the spread of the highly infectious variant of the Delta, with several cities, including the capital, placed under partial lockdown.


There’s nothing quite like a workout in the great outdoors, with its fresh air, changing landscapes, and much lower risk of coronavirus infection. But when temperatures soar, beware. Exercising in hot weather puts stress on your body, especially if the humidity is high.

So, if you plan to go out when the temperature rises, keep these tips in mind.


It has been a difficult time to start a family: some had to stop fertility treatments during the lockdown, while others reassessed whether they should have children. For today’s episode, CNN Chief Medical Correspondent Dr Sanjay Gupta hands things over to CNN reporter Chloe Melas to talk about the journey of having children, as well as her own personal story. with infertility. Listen now.


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