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Coronavirus More Likely To Spread Indoors Through Maskless Interaction: Study

According to researchers, next to vaccination, COVID-19 mitigation strategies should emphasise the use of face masks when speaking, and ensuring adequate ventilation to flush out long-lived aerosols

Coronavirus More Likely To Spread Indoors Through Maskless Interaction: Study

Washington: Speaking in indoor spaces without wearing a mask poses the greatest risk of spreading SARS-CoV-2, the virus that causes COVID-19, to others, a study has found. The research, published in the Journal of Internal Medicine on Tuesday (June 8), describes how different sized respiratory droplets emitted while speaking have a range of sizes, and can carry different amounts of virus. According to the researchers of the study, the most concerning droplets are those of intermediate size that remain suspended in the air for minutes.

Also Read: COVID Warriors: ‘Doctors On Wheels’ Address COVID-19 Healthcare Needs In Rural India

These droplets can be transported over considerable distances by air currents, they noted. Adriaan Bax, of the US National Institute of Diabetes and Digestive and Kidney Diseases and senior author of the study said,

We’ve all seen some spit droplets flying when people talk but there are thousands more, too small to be seen by the naked eye. When the water evaporates from such speech-generated, potentially virus-rich droplets, they float in the air for minutes, like smoke, thus putting others at risk.

The researchers reviewed many studies on the physical and medical aspects of aerosol droplets in virus transmission that have appeared since the start of the COVID-19 pandemic.

They concluded that airborne transmission of SARS-CoV-2 is not only the dominant pathway for transmitting COVID-19, but unmasked speech in confined spaces represents the activity that poses the greatest risk to others.

Since eating and drinking often take place indoors and typically involve loud speaking, it should come as no surprise that bars and restaurants have become the epicentre of multiple recent superspreading events, the authors of the study said.

They noted that next to vaccination, mitigation strategies should emphasise the use of face masks when speaking, and ensuring adequate ventilation to flush out long-lived aerosols. According to the researchers, such aerosols might otherwise accumulate in closed environments and enhance the risk of more serious lower respiratory tract infections.

Also Read: Women Falling Behind In India’s COVID-19 Vaccination Drive

(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

22,70,55,138Cases
18,97,86,461Active
3,25,98,424Recovered
46,70,253Deaths
Coronavirus has spread to 195 countries. The total confirmed cases worldwide are 22,70,55,138 and 46,70,253 have died; 18,97,86,461 are active cases and 3,25,98,424 have recovered as on September 17, 2021 at 5:36 am.

India

3,33,81,728 34,403Cases
3,39,0563,867Active
3,25,98,424 37,950Recovered
4,44,248 320Deaths
In India, there are 3,33,81,728 confirmed cases including 4,44,248 deaths. The number of active cases is 3,39,056 and 3,25,98,424 have recovered as on September 17, 2021 at 2:30 am.

State Details

State Cases Active Recovered Deaths
Maharashtra

65,11,525 3,595

52,893 310

63,20,310 3,240

1,38,322 45

Kerala

44,46,228 22,182

1,86,754 4,559

42,36,309 26,563

23,165 178

Karnataka

29,65,191 1,108

16,202 282

29,11,434 808

37,555 18

Tamil Nadu

26,40,361 1,693

16,756 120

25,88,334 1,548

35,271 25

Andhra Pradesh

20,34,786 1,367

14,708 105

20,06,034 1,248

14,044 14

Uttar Pradesh

17,09,628 23

193 11

16,86,549 11

22,886 1

West Bengal

15,59,567 707

8,025 25

15,32,922 725

18,620 7

Delhi

14,38,373 28

409 5

14,12,880 22

25,084 1

Odisha

10,18,298 580

5,335 105

10,04,845 681

8,118 4

Chhattisgarh

10,04,988 31

352 2

9,91,077 29

13,559

Rajasthan

9,54,230 4

103 1

9,45,173 5

8,954

Gujarat

8,25,677 22

149 0

8,15,446 22

10,082

Madhya Pradesh

7,92,374 7

119 5

7,81,738 12

10,517

Haryana

7,70,697 9

327 8

7,60,562 17

9,808

Bihar

7,25,864 12

72 6

7,16,134 6

9,658

Telangana

6,62,785 259

5,282 43

6,53,603 301

3,900 1

Punjab

6,01,180 30

314 11

5,84,399 38

16,467 3

Assam

5,97,074 468

5,381 15

5,85,914 479

5,779 4

Jharkhand

3,48,102 6

102 8

3,42,867 14

5,133

Uttarakhand

3,43,330 20

284 12

3,35,657 32

7,389

Jammu And Kashmir

3,27,466 170

1,421 72

3,21,630 98

4,415

Himachal Pradesh

2,16,430 127

1,568 82

2,11,215 206

3,647 3

Goa

1,75,183 95

699 1

1,71,195 96

3,289

Puducherry

1,25,170 107

963 63

1,22,380 42

1,827 2

Manipur

1,17,913 216

2,614 7

1,13,478 219

1,821 4

Tripura

83,787 31

427 26

82,553 56

807 1

Meghalaya

78,958 229

1,804 140

75,784 86

1,370 3

Mizoram

76,591 1,121

13,888 85

62,449 1,202

254 4

Chandigarh

65,168 4

31 2

64,319 2

818

Arunachal Pradesh

53,990 47

536 9

53,183 56

271

Sikkim

30,802 64

775 28

29,648 36

379

Nagaland

30,763 32

505 14

29,610 44

648 2

Ladakh

20,631 6

41 1

20,383 5

207

Dadra And Nagar Haveli

10,670

5 0

10,661

4

Lakshadweep

10,353

4 0

10,298

51

Andaman And Nicobar Islands

7,595 3

15 2

7,451 1

129

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