No evidence that Omicron instances are less severe than Delta: UK study
A previous Covid-19 recovery provides minimal protection against infection with the Omicron strain, according to a big study from Imperial College London.
The study on Friday found that previous Covid survivors only protected against Omicron by 19%. (Dec 17). The team predicted that two doses of vaccination were 20% effective against Omicron.
Adding a booster dosage helped significantly, blocking between 55% and 80% of symptomatic cases.
They studied all PCR-confirmed Covid cases in England between Nov 29 and Dec 11, making it one of the most comprehensive studies yet of Omicron’s ability to elude the body’s defences.
Less protection from earlier infection or inoculation and faster dissemination than previous virus iterations emerged from the results.
They found no evidence that Omicron instances were less severe than Delta based on the proportion of patients who had symptoms or visited the hospital. It’s unclear how serious Omicron cases will be. It’s too early to predict hospitalisations in the UK.
The rate of hospitalizations appears to be lower than during the country’s earlier outbreak of Delta illnesses, authorities said on Friday.
Intensive care facilities across Europe are still crammed with patients sick with the Delta strain.
So far, some governments have introduced new methods to halt the Omicron wave and allow time for booster efforts.
Up until December 11, the UK researchers estimated that each person infected with Omicron has spread it to over three other persons.