Connect with us

Coronavirus Outbreak

COVID-19: On Average 1,000 Virus Particles Transmitted During An Infection, Says A Study

According to researchers, reducing the viral load of infected individuals by a combination of measures such as mouth-nose protection, physical distance, and adequate indoor air exchange play a key role in preventing the spread of the virus

COVID-19: On Average 1,000 Virus Particles Transmitted During An Infection, Says A Study
Highlights
  • Experts have assessed 750 samples from COVID-19 superspreading clusters
  • Measures like wearing a mask play vital role in reducing infection: Experts
  • Adequate flow of air can help reduce COVID-19 transmission indoors: Experts

London: Scientists have assessed 750 samples from important COVID-19 superspreading clusters in Austria and found that on average 1,000 infectious virus particles are transmitted from one infected person to the next. According to the study, published in the journal Science Translational Medicine, these values are overall considerably higher than for other viruses such as HIV or noroviruses which cause gastroenteritis. “Yet, occasionally we also found infected people who apparently came into contact with fewer virus particles and still became infected,” said study co-author Andreas Bergthaler from the Austrian Academy of Sciences.

Also Read: Gap Between COVID-19 Recoveries And Active Cases Steadily Increasing: Health Ministry

We suspect that parameters such as the application of protective measures, the transmission route, or the immune system may play a decisive role here, Mr. Bergthaler added.

The researchers believe reducing the viral load of infected individuals by a combination of measures such as mouth-nose protection, physical distance, and adequate indoor air exchange play a key role in preventing the spread of the virus. In the study, the scientists used mutation analysis to reconstruct the SARS-CoV-2 transmission among 76 cases of infection and uncover the cryptic link between two epidemiological clusters.

According to the researchers, a special feature of the study is that they analysed a chain of eight consecutive transmissions.

The transmission chain started with a returnee from Italy. Within 24 days, the SARS-CoV-2 virus spread in the greater Vienna region via public and social events in closed rooms, the scientists noted.

“This example illustrates how contact tracing and virus mutation analysis together provide a strong pillar of modern pandemic control,” Mr. Bergthaler added. The scientists also observed the mutation behaviour of the coronavirus during the course of the disease in 31 patients. “Thanks to excellent epidemiological and our deep virus sequencing data, we could follow how the SARS-CoV-2 virus mutated in one individual and was then transmitted to others,” Mr. Bergthaler said.

Also Read: COVID-19 Studies Should Also Focus On Mucosal Immunity, Researchers Argue

(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

24,50,12,529Cases
20,64,25,824Active
3,36,14,434Recovered
49,72,271Deaths
Coronavirus has spread to 195 countries. The total confirmed cases worldwide are 24,50,12,529 and 49,72,271 have died; 20,64,25,824 are active cases and 3,36,14,434 have recovered as on October 28, 2021 at 4:00 am.

India

3,42,31,809 16,156Cases
1,60,9891,672Active
3,36,14,434 17,095Recovered
4,56,386 733Deaths
In India, there are 3,42,31,809 confirmed cases including 4,56,386 deaths. The number of active cases is 1,60,989 and 3,36,14,434 have recovered as on October 28, 2021 at 2:30 am.

State Details

State Cases Active Recovered Deaths
Maharashtra

66,06,536 1,485

23,096 3,500

64,43,342 4,947

1,40,098 38

Kerala

49,38,603 9,445

77,158 2,100

48,31,468 6,723

29,977 622

Karnataka

29,86,835 282

8,459 80

29,40,339 349

38,037 13

Tamil Nadu

26,98,493 1,075

12,288 252

26,50,145 1,315

36,060 12

Andhra Pradesh

20,64,854 567

4,777 122

20,45,713 437

14,364 8

Uttar Pradesh

17,10,114 13

100 6

16,87,115 7

22,899

West Bengal

15,89,042 976

7,973 124

15,61,973 837

19,096 15

Delhi

14,39,709 38

348 25

14,14,270 13

25,091

Odisha

10,39,818 549

4,392 213

10,27,108 334

8,318 2

Chhattisgarh

10,05,926 28

263 14

9,92,088 12

13,575 2

Rajasthan

9,54,411 4

20 0

9,45,437 4

8,954

Gujarat

8,26,481 17

173 2

8,16,220 15

10,088

Madhya Pradesh

7,92,804 20

108 9

7,82,172 10

10,524 1

Haryana

7,71,204 15

133 5

7,61,022 10

10,049

Bihar

7,26,073 5

41 1

7,16,371 4

9,661

Telangana

6,70,829 186

4,164 63

6,62,714 122

3,951 1

Assam

6,09,506 244

3,838 153

5,99,681 391

5,987 6

Punjab

6,02,289 38

246 20

5,85,487 16

16,556 2

Jharkhand

3,48,705 28

160 30

3,43,408 56

5,137 2

Uttarakhand

3,43,861 17

150 6

3,36,312 23

7,399

Jammu And Kashmir

3,31,865 70

838 16

3,26,596 86

4,431

Himachal Pradesh

2,23,406 261

1,972 211

2,17,693 48

3,741 2

Goa

1,77,969 23

454 29

1,74,152 51

3,363 1

Puducherry

1,27,846 40

443 10

1,25,546 50

1,857

Manipur

1,23,473 70

844 29

1,20,712 97

1,917 2

Mizoram

1,19,496 547

7,320 446

1,11,752 991

424 2

Tripura

84,438 15

123 1

83,499 14

816

Meghalaya

83,466 51

507 22

81,511 71

1,448 2

Chandigarh

65,331 5

29 2

64,482 3

820

Arunachal Pradesh

55,120 6

115 22

54,725 28

280

Sikkim

31,925 13

177 1

31,353 12

395

Nagaland

31,759 12

222 3

30,856 15

681

Ladakh

20,925 8

47 6

20,670 2

208

Dadra And Nagar Haveli

10,682 1

6 0

10,672 1

4

Lakshadweep

10,365

0 0

10,314

51

Andaman And Nicobar Islands

7,650 2

5 1

7,516 1

129

Coronavirus Outbreak: Full CoverageTesting CentresFAQs

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Highlights From The 12-Hour Telethon

Leaving No One Behind

Mental Health

Environment

Join Us