Bulgaria’s National Centre for Infectious and Parasitic Diseases (NCIPD) said on September 14 that it has completed the sequencing of 422 samples taken from Covid-19 patients in the country, finding 421 instances of the Delta variant.
The samples had been taken over a period of time ranging from August 5 to August 26 and came from 22 out of Bulgaria’s 28 districts. These included three samples taken from foreign nationals, although NCIPD did not clarify if the people tested were permanent residents, tourists or in transit.
As of August 25-September 1, 17 patients who had been shown by the sequencing to have had the Delta variant had died, 65 were in hospital, 318 were undergoing home treatment and 21 had recovered.
The one non-Delta case sequenced by the NCIPD showed the coronavirus strain C.36.3.1, which the World Health Organisation currently designates as an “alert for further monitoring”, below the status of “variant of interest” or “variant of concern”. The Delta strain is one of four current “variants of concern”, according to the WHO designation.
The patient with the C.36.3.1 strain was undergoing treatment at home as of August 25-September 1, NCIPD said.
The largest number of Delta variant samples came from the district of Bourgas (70), followed by the city of Sofia (56) and the districts of Plovdiv (44), Blagoevgrad (39) and Varna (36).
Of the three samples from foreign nationals, two were from the district of Sofia and one from the district of Bourgas. All of the samples had the Delta variant.
(Photo: Military Medical Academy)
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