Xinhua News Agency, Beijing, August 3- Science: new crown virus "infection breakthrough" is how is it
Popular Science: What's the "Breakthrough Infection" of the New Coronavirus Xinhua News Agency reporter
Recently, as the delta strain of the highly infectious variant virus of the new crown has accelerated globally, some countries have reported an increase in the number of “breakthrough infections” among new crown vaccine vaccinators
Cases reported in multiple countries
Cases reported in multiple countries "Breakthrough infection" refers to the pathogen breaking through the defense line of the vaccine, causing the person who has completed the vaccination to be infected with the disease that the vaccine should prevent
Recently, some countries with high vaccination rates have reported multiple cases of "breakthrough infection"
"Older people and those with underlying disease remains the 'breakthrough infection' after-risk groups for the development of severe and even death
Dean The Israeli Ministry of Health reported on July 24 that a total of 5770 cases of "breakthrough infection" after vaccination have been discovered in the country, of which 495 are receiving hospital treatment and 123 have died
Challenge the vaccine effect
Challenge the vaccine effect Xu Ke pointed out that many viruses mutate quickly, escape existing vaccines, and also cause "breakthrough infection
Variant strains of the new crown, including the Delta strain, are challenging the effectiveness of vaccine protection
According to data released by the Israeli Ministry of Health on July 22, due to the delta strain, the effective rate of Pfizer's new crown vaccine in Israel to prevent new crown infections has dropped to 39%
However, "breakthrough infection" does not mean that the vaccine is completely ineffective
How to deal with the epidemic
How to deal with the epidemic In the face of the continuous mutation of the new coronavirus and the increasing trend of "breakthrough infection" cases, many countries have adopted methods such as establishing a "breakthrough infection" case database and carrying out enhanced vaccination
For example, the US Centers for Disease Control and Prevention has established a vaccine "breakthrough infection" database, which covers detailed information such as patient demographic information, geographic location, vaccination time, vaccine type, and virus sequence
The emergence of "breakthrough infection" cases may mean that we have to accept the long-term coexistence of the new coronavirus
Some experts also suggested that in order to deal with "breakthrough infections", we can speed up the development of vaccine formulations with higher protection effectiveness, appropriately increase the number of vaccine immunization doses, namely inject booster shots, and adopt new immune enhancement technologies
Zhang Jun said that from the perspective of increasing the comprehensiveness of vaccine immunity mobilization, the current large-scale intramuscular injection of the new crown vaccine mainly mobilizes the systemic immune response, but does not have the effect of local respiratory tract immune mobilization.
Focus on the new crown pneumonia epidemic
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