Delta Variant 60 Per Cent More Transmissible, Reduces Vaccine Effect: UK Experts

Delta Variant 60 Per Cent More Transmissible, Reduces Vaccine Effect: UK Experts

Public Health England (PHE) of the UK, which has been tracking the variants of concerns (VOC) of coronavirus on a weekly basis, said that the cases of the Delta VOC have risen by 29,892 to hit 42,323 in the country – an increase of around 70 per cent
Coronavirus Outbreak, News, Swasth India
- in Coronavirus Outbreak, News, Swasth India
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Delta Variant 60 Per Cent More Transmissible, Reduces Vaccine Effect: UK ExpertsThe Delta variant of coronavirus has caused a rise in cases in the UK, prompting questions about whether social distancing restrictions will be lifted on June 21 (Representational)
Highlights
  • Delta variant accounting for the overwhelming majority of new cases: PHE
  • Vaccines are our best defence against COVID-19: Expert
  • The health experts are using novel genotyping tests to detect the Delta VOC

London: The Delta variant of COVID-19, or the B1.617.2 variant of concern (VOC) first identified in India, is about 60 per cent more transmissible than the Alpha strain identified in the UK and also reduces the effectiveness of vaccines to some extent, UK health experts report on Friday. Public Health England (PHE), which has been tracking VOCs on a weekly basis, said that the cases of the Delta VOC have risen by 29,892 to hit 42,323 in the country – an increase of around 70 per cent.

Also Read: Must Work With WHO And World Trade Organisation For Easy Access Of COVID-19 Vaccines: France President

The latest data also indicates that over 90 per cent of new COVID-19 cases in the UK are now the Delta variant, which continues to show a significantly higher rate of growth compared to the Alpha VOC – which was first identified in the region of Kent in England and was the dominant variant in the country so far.

New research from PHE suggests that the Delta variant is associated with an approximately 60 per cent increased risk of household transmission compared to the Alpha variant. Growth rates for Delta cases are high across the regions, with regional estimates for doubling time ranging from 4.5 days to 11.5 days, PHE said in its latest analysis.

There are now analyses from England and Scotland supporting a reduction in vaccine effectiveness for Delta compared to Alpha. This is more pronounced after one dose (absolute reduction in vaccine effectiveness against symptomatic infection of approximately 15 per cent to 20 per cent after one dose), its risk assessment analysis reads.

Iterated analysis continues to show vaccine effectiveness against Delta is higher after two doses but that there is a reduction for Delta compared to Alpha. There is uncertainty around the magnitude of the change in vaccine effectiveness after two doses of Oxford-AstraZeneca vaccine, it adds.

PHE said that with the Delta variant now accounting for the overwhelming majority of new cases in the UK, it is “encouraging” to see that the increase in cases is not yet accompanied by a similarly large increase in hospitalisations.

Also Read: ‘Jaan Hai To Jahaan Hai’, A Nationwide Campaign To Counter Rumours On Anti-COVID Vaccination Drive: Union Minister Mukhtar Abbas Naqvi

PHE will continue to monitor closely over the next few weeks, but the data currently suggest that the vaccination programme continues to mitigate the impact of this variant in populations who have high two dose vaccine coverage, it adds.

The health experts are using novel genotyping tests to detect the Delta VOC, giving a result for action within 48 hours. Positive tests identified through this process are subsequently confirmed through whole genome sequencing and PHE says that recent data have shown them to be extremely accurate in indicating a positive variant result.

With numbers of Delta variant cases on the rise across the country, vaccination is our best defence. If you are eligible, we urge you to come forward and be vaccinated. Remember that two doses provide significantly more protection than a single dose. However, while vaccination reduces the risk of severe disease, it does not eliminate it. With data showing that Delta is significantly more transmissible than Alpha, it is just as important as ever to follow public health advice, which has not changed. Get vaccinated, work from home where you can and remember ‘hands, face, space, fresh air’ at all times. These measures work, and they save lives, said Dr Jenny Harries, Chief Executive of the UK Health Security Agency.

The latest data comes as the UK government is set to announce its plans on Monday on whether the roadmap to lifting all lockdown restrictions by June 21 can go ahead. There are growing voices from within the scientific community calling for a delay to that date in order to administer further second doses of vaccines for the over-50s, to ensure greater protection against the Delta variant.

Also Read: Centre Issues Guidelines For Management Of Black Fungus Disease In Children Below 18 Years

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

NDTV – Dettol Banega Swasth India campaign is an extension of the five-year-old Banega Swachh India initiative helmed by Campaign Ambassador Amitabh Bachchan. It aims to spread awareness about critical health issues facing the country. In wake of the current COVID-19 pandemic, the need for WASH (WaterSanitation and Hygiene) is reaffirmed as handwashing is one of the ways to prevent Coronavirus infection and other diseases. The campaign highlights the importance of nutrition and healthcare for women and children to prevent maternal and child mortality, fight malnutrition, stunting, wasting, anaemia and disease prevention through vaccines. Importance of programmes like Public Distribution System (PDS), Mid-day Meal Scheme, POSHAN Abhiyan and the role of Aganwadis and ASHA workers are also covered. Only a Swachh or clean India where toilets are used and open defecation free (ODF) status achieved as part of the Swachh Bharat Abhiyan launched by Prime Minister Narendra Modi in 2014, can eradicate diseases like diahorrea and become a Swasth or healthy India. The campaign will continue to cover issues like air pollutionwaste managementplastic banmanual scavenging and sanitation workers and menstrual hygiene

World

19,89,21,889Cases
6,44,02,340Active
13,02,83,678Recovered
42,35,871Deaths
Coronavirus has spread to 194 countries. The total confirmed cases worldwide are 19,89,21,889 and 42,35,871 have died; 6,44,02,340 are active cases and 13,02,83,678 have recovered as on August 3, 2021 at 3:55 am.

India

3,17,26,507 30,549Cases
4,04,9588,760Active
3,08,96,354 38,887Recovered
4,25,195 422Deaths
In India, there are 3,17,26,507 confirmed cases including 4,25,195 deaths. The number of active cases is 4,04,958 and 3,08,96,354 have recovered as on August 3, 2021 at 2:30 am.

State Details

State Cases Active Recovered Deaths
Maharashtra

63,15,063 4,869

78,700 3,650

61,03,325 8,429

1,33,038 90

Kerala

34,25,473 13,984

1,65,834 2,057

32,42,684 15,923

16,955 118

Karnataka

29,08,284 1,285

24,045 123

28,47,627 1,383

36,612 25

Tamil Nadu

25,63,544 1,957

20,385 139

25,09,029 2,068

34,130 28

Andhra Pradesh

19,70,008 1,546

20,582 437

19,36,016 1,968

13,410 15

Uttar Pradesh

17,08,500 24

646 18

16,85,091 42

22,763

West Bengal

15,29,295 575

10,803 171

15,00,331 734

18,161 12

Delhi

14,36,401 51

538 44

14,10,809 95

25,054

Chhattisgarh

10,02,458 236

1,918 1

9,87,012 234

13,528 3

Odisha

9,79,737 1,032

13,318 820

9,60,386 1,785

6,033 67

Rajasthan

9,53,704 16

241 9

9,44,509 25

8,954

Gujarat

8,24,922 22

251 3

8,14,595 25

10,076

Madhya Pradesh

7,91,862 17

132 7

7,81,217 10

10,513

Haryana

7,69,956 14

703 12

7,59,614 25

9,639 1

Bihar

7,24,917 37

401 34

7,14,872 71

9,644

Telangana

6,45,997 591

8,819 54

6,33,371 643

3,807 2

Punjab

5,99,162 32

473 31

5,82,395 63

16,294

Assam

5,68,257 1,275

12,429 213

5,50,534 1,469

5,294 19

Jharkhand

3,47,223 23

239 15

3,41,855 38

5,129

Uttarakhand

3,42,198 37

574 35

3,34,261 71

7,363 1

Jammu And Kashmir

3,21,725 118

1,254 43

3,16,090 73

4,381 2

Himachal Pradesh

2,06,369 208

1,304 75

2,01,543 132

3,522 1

Goa

1,71,295 90

1,027 16

1,67,118 72

3,150 2

Puducherry

1,21,059 54

944 38

1,18,320 92

1,795

Manipur

99,872 541

9,814 591

88,480 1,120

1,578 12

Tripura

79,026 304

3,104 12

75,167 292

755

Meghalaya

65,939 350

5,843 200

58,987 537

1,109 13

Chandigarh

61,960 6

33 3

61,116 3

811

Arunachal Pradesh

48,565 305

3,508 167

44,823 469

234 3

Mizoram

40,111 748

12,316 127

27,642 618

153 3

Nagaland

28,004 59

1,300 44

26,130 99

574 4

Sikkim

26,880 126

3,323 131

23,211 256

346 1

Ladakh

20,345 5

57 0

20,081 5

207

Dadra And Nagar Haveli

10,650

15 9

10,631 9

4

Lakshadweep

10,207 12

79 4

10,078 8

50

Andaman And Nicobar Islands

7,539

6 1

7,404 1

129

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