Like the Pfizer / BioNTech vaccine, Moderna's vaccine is among the vaccine candidates that have passed Phase 3 testing, leading to their approval in the United States and Europe. And according to experts, these vaccines could give us immunity for at least a year, if not longer.
However, despite this good news, last week Moderna CEO Stephan Bancel announced that “SARS-CoV-2 is not going to go away and we should live with this virus forever ”. A statement that joins that made by WHO experts and Dr Anthony Fauci at the start of the pandemic.
For them, no matter how good the vaccines are, the virus is unlikely to be eradicated and as with other infectious diseases, such as the flu, which is rampant and can lead to epidemics, the world will have to learn to live with the infection in the world. coronavirus as it moves from the pandemic phase to the endemic phase.
Vaccines and other treatments will only help reduce the death rate.
We should already be thinking about living with the Sars-CoV-2 virus
Bancel added that this is not necessarily scary. Moreover, according to a new study which modeled the evolution of the COVID-19 pandemic, this disease will probably become endemic.
However, it could be harmless than a cold. But only on condition that it occurs in childhood and in a mild form, so that it provides prolonged protection against severe forms in adulthood.
Studies by researchers at Emory University and Pennsylvania State University further suggest that over the years, the severity of COVID-19 will change , and ultimately with people at risk of contracting the disease during childhood, the virus will not be more virulent than a cold.
From the analysis of immunological and epidemiological data on endemic human coronaviruses (HCoV), these researchers concluded that anti-infective immunity will decline rapidly while that which reduces disease will persist longer.
Ultimately, this disease will only be considered a common cold.
According to this study model, SARS-CoV-2 cannot be more virulent than the common cold once the endemic phase is reached, and if the primary infection is in childhood. In other words, the less severe the disease during childhood, the easier it will be to cope with in adulthood.
And mass vaccinations may not be necessary once you move into an endemic phase. Continuous vaccination will then only be necessary in children with a severe primary Sars-CoV-2 infection.
However, these studies cannot indicate when the transition from the pandemic to endemic COVID-19 will take place. One can only hope to achieve herd immunity more quickly with the Pfizer / BioNTech and Moderna vaccines as well as the other candidate vaccines being tested, when they come out.