Bulgaria’s National Centre for Infectious and Parasitic Diseases (NCIPD) said on December 23 that it has completed the sequencing of 371 samples taken from Covid-19 patients in the country, all of them showing the Delta variant.
The samples had been taken over a period of time ranging from November 22 to December 11 and came from 23 out of Bulgaria’s 28 districts.
As of December 13, five patients in the NCIPD sample group had died, 102 were in hospital, 260 were undergoing home treatment and four had recovered.
NCIPD said that 50 cases it sequenced showed the Delta strain of the virus, collectively designated B.1.617.2 by the World Health Organisation.
The other cases were attributed to separate individual lineages of that variant, with the most numerous being AY.43 (82), AY.4 (53), AY.9.1 (30), AY.9.2 (22), AY.4.4 (20), AY.4.2 and AY.122 (16 each). Twenty other subvariants accounted for the remaining 82 samples sequenced by NCIPD.
The largest number of samples came from the city of Sofia (83), followed by the districts of Bourgas (53), Rousse (45), Plovdiv (26), Sofia (24) and Pazardzhik (20).
(Photo: Military Medical Academy)
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