Japan’s government will put in place a coronavirus state of emergency covering three of Tokyo’s neighboring prefectures and Osaka on Monday.
An internal Centers for Disease Control and Prevention brief published by theThursday reveals more details about why the delta variant is different to and more concerning than other strains of the coronavirus.
The CDC said the main differences between the delta variant and previous strains is that delta is highly contagious and likely more severe. Plus, breakthrough infections caused by delta may be as transmissible as unvaccinated cases. "This is an incredibly, incredibly contagious version of virus, it's almost like a whole different virus," Dr. Ashish Jha said."And CDC is estimating that it is probably also more deadly."
Vaccines prevent more than 90% of severe diseases, but may be less effective at preventing infection or transmission of the delta variant, the CDC said. Therefore, there could be more breakthrough infections and more community spread despite people's vaccination status. "Current vaccines continue to provide strong protection against severe illness and death, but the delta variant is likely responsible for increased numbers of breakthrough infections -- breakthroughs that could be as infectious as unvaccinated cases," Dr. John Brownstein, an ABC News contributor, said."This internal document highlights the challenge we all now face in combating the most transmissible variant of COVID so far.
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