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Tag: transmission
November 10, 2020
Modeling the Stability of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) on Skin, Currency, and Clothing
Harbourt et al. exposed SARS-CoV-2 to human skin, paper currency, and clothing in a lab setting under various temperatures and found that the virus was more stable in colder conditions. At 22oC, the virus was stable on human skin, a $1 bill, and on clothing, for at least 96 hours, 8 hours, and 4 hours,…
High Prevalence of SARS-CoV-2 Antibodies in Pets from COVID-19+ Households
In households with a SARS-CoV-2 positive case, 10 out of 47 (21%) cats and dogs were seropositive for antibodies against SARS-CoV-2, compared to 1 out of 38 (3%) cats and dogs in households without a person with known SARS-CoV-2 infection. Seroprevalence was not associated with the number of pets per household, which the authors suggest…
November 9, 2020
Intergenerational Residence Patterns and Covid-19 Fatalities in the EU and the US
A study using aggregate data from 29 European countries and all 50 US states reported a positive correlation between intergenerational co-residence (age 18−34 years living with their parents) and COVID-19 mortality. On average, each additional percent increase in intergenerational co-residence was associated with a 3-4% increase in cumulative deaths from COVID-19 40-100 days following the…
November 6, 2020
Incidence of COVID-19 Virus Transmission in Three Dental Offices: A 6-Month Retrospective Study
There was no evidence for transmission of SARS-CoV2 in dental patients undergoing procedures in New York during a period that included the peak of the pandemic. A prospective study of dental patients (n =2,810) in New York treated in three different dental offices over a 6 months period of March 15-September 15 found that there…
A SARS-CoV-2 Outbreak Illustrating the Challenges in Limiting the Spread of the Virus — Hopi Tribe, May–June 2020
After 2 members of the Hopi tribe tested positive for SARS-CoV-2, among 58 of their primary and secondary contacts (immediate and extended family and community members), 27 (47%) laboratory-confirmed SARS-CoV-2 infections occurred. Among all 29 infected individuals, 22 (76%) were symptomatic and seven were asymptomatic. The majority of people who had presymptomatic and asymptomatic infection…
Network Characteristics and Visualization of COVID-19 Outbreak in a Large Detention Facility in the United States — Cook County, Illinois, 2020
A network analysis of the movements of detained persons and staff members during an outbreak of SARS-CoV-2 in a Chicago jail found that the systematic identification and isolation of infected persons was likely effective at limiting transmission. The movement patterns and connections of 5,884 persons (65% detained persons and 35% staff members) at the jail…
November 5, 2020
Revealing Fine-Scale Spatiotemporal Differences in SARS-CoV-2 Introduction and Spread
Analysis of 247 SARS-CoV-2 sequences from two nearby communities in Wisconsin illustrate distinct patterns of viral spread. Though Dane County had the 12th known introduction of SARS-CoV-2 in the US, this did not lead to community spread. 60 miles away, Milwaukee County experienced few introductions followed by extensive community spread. Moreno et al. (Nov 3,…
Favorable Outcomes among Neonates Not Separated from Their Symptomatic SARS-CoV-2-Infected Mothers
In France, among 26 SARS-CoV-2 positive mothers and their neonates, nasopharyngeal and anal swabs from neonates at birth, day 3, and weekly if hospital stay was prolonged, only detected one positive PCR test in an anal swab at birth; nasopharyngeal swabs were negative at day 0 and 3. The infant never developed symptoms. None of…
SARS-CoV-2 Transmission during Team-Sport Do Players Develop COVID-19 after Participating in Rugby League Matches with SARS-CoV-2 Positive Players
[Pre-print, not peer-reviewed] Player interaction and proximity analysis of 4 professional rugby matches in which 8 players were retrospectively found to have SARS-CoV-2 suggest that risk of in-game transmission may be minimal. While video footage analysis and GPS data show the positive players were within 2 meters of other players for up to 316 seconds…
Household Transmission of SARS-COV-2 Insights from a Population-Based Serological Survey
[Pre-print, not peer-reviewed] A household serological survey conducted in Geneva from April to June (n=2,267 households) estimated a 17.2% risk of being infected with SARS-CoV-2 by a single household member compared to a 5.1% cumulative infection risk (through June 30th) from exposures outside the household. Infection risk from an infected household member increased with age,…
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