Tag

Transmission Risk

All articles tagged with #transmission risk

"Quantifying SARS-CoV-2 Transmission Risk: Insights from 7 Million Contacts"

Originally Published 2 years ago — by Nature.com

A study analyzing 7 million contacts recorded by the NHS COVID-19 app in England and Wales found a strong correlation between app-computed risk scores and actual transmission probability of SARS-CoV-2. The study revealed that longer exposures at greater distances had similar transmission risk to shorter exposures at closer distances. The probability of transmission increased linearly with the duration of exposure and continued to increase over several days. Households accounted for 6% of contacts but 40% of transmissions. The findings suggest that digital contact tracing can provide precise risk analysis to inform public health measures during a pandemic.

health health contact-tracing covid-19 digital-measurement health sars-cov-2 transmission-risk

COVID-19: Risks, Immunity, and Hospital Infections

Originally Published 2 years ago — by Nature.com

A study published in Nature Communications reveals that prolonged exposure to someone with COVID-19 increases the risk of infection, even for vaccinated individuals. The study, conducted in correctional facilities, found that vaccination and previous infection provided protection against the virus for those with no or moderate exposure, but not for those with close exposure. The findings highlight the importance of measures such as masking and improved ventilation to reduce exposure and enhance vaccine-mediated immunity.

health health covid-19 exposure health mitigation-measures transmission-risk vaccination