Result for
Topic: Transmission
March 5, 2020
Uncertainties about the transmission routes of 2019 novel coronavirus
COVD-19 transmission pathways remain only partially understood. This commentary reviews what is known and what is still under study. Han et al. (Mar 4, 2020). Uncertainties about the transmission routes of 2019 novel coronavirus. Influenza and Other Respiratory Viruses. https://doi.org/10.1111/irv.12735
Epidemiology and Transmission of COVID-19 in Shenzhen China: Analysis of 391 cases and 1,286 of their close contacts
This report summarizes the epidemiology of 391 COVID-19 patients in Shenzhen China and 1,286 close contacts. Rather than reporting on cases identified through symptom surveillance, this study offers a better estimation of how COVID-19 looks more broadly in the population by relying on contact tracing. In addition to clinical details, findings indicate that household contacts…
March 4, 2020
Potential impact of seasonal forcing on a SARS-CoV-2 pandemic
Seasonal variation among the four endemic coronaviruses was used to model seasonality of SARS-CoV-2 across a range of scenarios, regions, and populations. The combined effects of seasonal changes and infection control efforts may be partially responsible for reductions in incidence globally and should be taken into account when monitoring global COVID-19 transmission. Neher et al….
Clinical features and sexual transmission potential of SARS-CoV-2 infected female patients: a descriptive study in Wuhan, China
Researchers tested vaginal and anal swabs from the 35 female patients with COVID-19 and only one anal swab sample from one patient was positive for SARS-CoV-2. Findings suggest no risk of transmission through vaginal sex, though additional research is still needed. Cui et al. (Mar 3 , 2020). Clinical features and sexual transmission potential of…
March 3, 2020
Closed environments facilitate secondary transmission of coronavirus disease 2019 (COVID-19)
Closed environments appear to contribute to secondary transmission of COVID-19 and also promote superspreading events. Declining incidence rates in China after social distancing was enforced further supports this conclusion. Nishiura et al. (Mar 3, 2020). Closed environments facilitate secondary transmission of coronavirus disease 2019 (COVID-19). Pre-print downloaded Mar 3 from https://doi.org/10.1101/2020.02.28.20029272
A Chinese Case of COVID-19 Did Not Show Infectivity During the Incubation Period: Based on an Epidemiological Survey
While current evidence points to probably asymptomatic transmission of COVID-19, the evidence is not entirely definitive. This case study did not find evidence of asymptomatic transmission after an epidemiologic assessment of a confirmed patient in Korea. Bae (Mar 2, 2020).A Chinese Case of COVID-19 Did Not Show Infectivity During the Incubation Period: Based on an…
Community Transmission of Severe Acute Respiratory Syndrome Coronavirus 2, Shenzhen, China, 2020
In Shenzhen, China, community and family transmission of COVID-19 are outpacing transmission from individuals with known exposures or travel history to Hubei province. An increase in pediatric cases may be attributable to more exposure opportunities due to community transmission. The authors discuss important strategies for reducing transmission, including early screening, diagnosis, isolation, and treatment, in…
February 27, 2020
Emergent Strategies for the Next Phase of COVID-19
Huh et al. discuss emergent strategies for the next phase of COVID-19. Their review of transmission dynamics from the earliest period of the outbreak showed characteristics such as; relatively large proportion of mild cases, high viral shedding at the symptom onset, and a slowly progressive clinical course, make containment difficult and undermine the effectiveness of…
Clinical features and sexual transmission potential of SARS-CoV-2 infected female patients: a descriptive study in Wuhan, China
Cui et al. investigated possible sexual transmission of SARS-CoV-2 in 35 female patients diagnosed with COVID-19 using RT-PCR, to detect SARS-CoV-2 in vaginal environment and anal swab samples. All vaginal samples tested negative and only one anal swab sample tested positive. The results from this study do not indicate sexual transmission of SARS-CoV-2. Cui et…
February 26, 2020
emperature significant change COVID-19 Transmission in 429 cities
This meteorological study found that there may be some effect of temperature on the transmission of COVID-19, which may also help to explain the initial cluster of cases in cases in Wuhan. The authors suggest there may be a nonlinear dose-response relationship between temperature and virus transmission and that colder climates will require stricter control…
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