People who contract the Delta variant have double the risk of hospitalization, as compared with earlier versions of the coronavirus, a new study warns.
Presanis and colleagues analyzed health data for more than 43,000 people who were infected with COVID-19 between March 29 and May 23. Among the people in the study, 74% were unvaccinated, 24% were partly vaccinated, and 2% were fully vaccinated.
At that time, 80% were infected with the Alpha variant, also known as B.1.1.7, and 20% were infected with the Delta variant, or B.1.617.2. Those infected with Delta were younger, on average. The risk of hospitalization was small for both groups -- about 2.2% of those with the Alpha variant and 2.3% of those with the Delta variant were admitted to a hospital within 2 weeks of testing positive.
But once the researchers accounted for things that raise a patient’s risk for hospitalization, they found Delta was linked to more than twice a higher risk, particularly for those who were unvaccinated or only partially vaccinated. “We already know that vaccination offers excellent protection against Delta,” Gavin Dabrera, a lead author and an epidemiologist at Public Health England, said“As this variant accounts for over 98% of COVID-19 cases in the U.K., it is vital that those who have not received two doses ofThe Delta variant accounts for nearly 99% of new COVID-19 cases in the U.S., according
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