The demise of the unvaccinated lady in March earlier this yr is believed to be the primary documented case of its sort. The girl, who died in Belgium, is suspected to have contracted each the Alpha and Beta variant from two totally different individuals.
Scientists are actually warning that, though uncommon, twin infections are occurring.
Dr Anne Vankeerberghen, lead researcher from the OLV hospital in Aalst, Belgium, mentioned the co-infection seemingly hastened her signs.
She mentioned: “Both these variants were circulating in Belgium at the time, so it is likely that the lady was co-infected with different viruses from two different people.
“Unfortunately, we don’t know how she became infected.
“She was a lady who lived alone, but she got a lot of helpers coming in to care for her.
“Whether the co-infection of the two variants of concern played a role in the fast deterioration of the patient is difficult to say.”
The developed types of the virus are believed to have originated in Kent and Brazil respectively.
Each Alpha and Beta strains are classed as “variants of concern” and have mutations that differ from the bottom model of the virus.
READ MORE: Delta variant: Pfizer creating booster shot to focus on mutation
Current knowledge suggests the Pfizer/BioNTech and AstraZeneca vaccines had been 96 % and 92 % efficient towards hospitalisation from the Delta variant respectively after two doses.
Nonetheless, a examine compiled by Israel’s Ministry of Well being launched final week suggests the Pfizer vaccine turns into much less efficient at coping with variants after six months – dropping to round 64 % efficacy.
The Delta variant, first recognized in India, is essentially the most prevalent pressure within the UK and US.