Household Secondary Attack Rates of SARS-CoV-2 by Variant and Vaccination Status
Sign Up to like & getrecommendations! Published in 2022 at "JAMA Network Open"
DOI: 10.1001/jamanetworkopen.2022.9317
Abstract: This systematic reviewe and meta-analysis evaluates household secondary attack rates of SARS-CoV-2 by variant and vaccination status. read more here.
Keywords: cov variant; rates sars; attack rates; secondary attack ... See more keywords
Comparison of secondary attack rate and viable virus shedding between patients with SARS‐CoV‐2 Delta and Omicron variants: A prospective cohort study
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Medical Virology"
DOI: 10.1002/jmv.28369
Abstract: There are limited data comparing the transmission rates and kinetics of viable virus shedding of the Omicron variant to those of the Delta variant. We compared these rates in hospitalized patients infected with Delta and… read more here.
Keywords: secondary attack; virus shedding; virus; delta omicron ... See more keywords
Secondary attack rates from asymptomatic and symptomatic influenza virus shedders in hospitals: Results from the TransFLUas influenza transmission study.
Sign Up to like & getrecommendations! Published in 2021 at "Infection control and hospital epidemiology"
DOI: 10.1017/ice.2021.112
Abstract: OBJECTIVE Nosocomial transmission of influenza is a major concern for infection control. We aimed to dissect transmission dynamics of influenza, including asymptomatic transmission events, in acute care. DESIGN Prospective surveillance study during 2 influenza seasons.… read more here.
Keywords: secondary attack; transmission; influenza; study ... See more keywords
Retrospective, Observational Studies for Estimating Vaccine Effects on the Secondary Attack Rate of SARS-CoV-2.
Sign Up to like & getrecommendations! Published in 2022 at "American journal of epidemiology"
DOI: 10.1093/aje/kwad046
Abstract: COVID-19 vaccines are highly efficacious at preventing symptomatic infection, severe disease, and death. Most of the evidence that COVID-19 vaccines also reduce transmission of SARS-CoV-2 is based on retrospective, observational studies. Specifically, an increasing number… read more here.
Keywords: attack rate; vaccine; observational studies; secondary attack ... See more keywords
Association Between Population-Level Factors and Household Secondary Attack Rate of SARS-CoV-2: A Systematic Review and Meta-analysis
Sign Up to like & getrecommendations! Published in 2022 at "Open Forum Infectious Diseases"
DOI: 10.1093/ofid/ofac676
Abstract: Abstract Background Accurate estimation of household secondary attack rate (SAR) is crucial to understand the transmissibility of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The impact of population-level factors, such as transmission intensity in the… read more here.
Keywords: attack rate; household; rate; secondary attack ... See more keywords
mRNA vaccine effectiveness against SARS-CoV-2 B.1.617.2 (Delta) and B.1.1.529 (Omicron) variant transmission from home care cases to household contacts in South Korea
Sign Up to like & getrecommendations! Published in 2022 at "Osong Public Health and Research Perspectives"
DOI: 10.24171/j.phrp.2022.0243
Abstract: Objectives Household contacts of confirmed cases of coronavirus disease 2019 (COVID-19) are exposed to a high risk of viral transmission, and secondary incidence is an important indicator of community transmission. This study analyzed the secondary… read more here.
Keywords: omicron variant; household contacts; attack rate; transmission ... See more keywords
Secondary Attack Rate, Transmission and Incubation Periods, and Serial Interval of SARS-CoV-2 Omicron Variant, Spain
Sign Up to like & getrecommendations! Published in 2022 at "Emerging Infectious Diseases"
DOI: 10.3201/eid2806.220158
Abstract: Contact tracing data of SARS-CoV-2 Omicron variant cases during December 2021 in Cantabria, Spain, showed increased transmission (secondary attack rate 39%) compared with Delta cases (secondary attack rate 26%), uninfluenced by vaccination status. Incubation and… read more here.
Keywords: secondary attack; attack rate; sars cov; cov omicron ... See more keywords
Nosocomial COVID-19 Incidence and Secondary Attack Rates among Patients of Tertiary Care Center, Zurich, Switzerland
Sign Up to like & getrecommendations! Published in 2022 at "Emerging Infectious Diseases"
DOI: 10.3201/eid2810.220321
Abstract: Of 1,118 patients with COVID-19 at a university hospital in Switzerland during October 2020–June 2021, we found 83 (7.4%) had probable or definite healthcare-associated COVID-19. After in-hospital exposure, we estimated secondary attack rate at 23.3%.… read more here.
Keywords: nosocomial covid; attack rates; covid incidence; incidence secondary ... See more keywords
Increased Secondary Attack Rate among Unvaccinated Household Contacts of Coronavirus Disease 2019 Patients with Delta Variant in Japan
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Environmental Research and Public Health"
DOI: 10.3390/ijerph19073889
Abstract: This study aimed to elucidate the household secondary attack rate (HSAR) of the Delta variant in comparison to the Alpha variant, and evaluate the risk factors among unvaccinated household contacts of patients with coronavirus disease… read more here.
Keywords: index; household contacts; attack rate; delta variant ... See more keywords
Increased Secondary Attack Rates among the Household Contacts of Patients with the Omicron Variant of the Coronavirus Disease 2019 in Japan
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Environmental Research and Public Health"
DOI: 10.3390/ijerph19138068
Abstract: This study investigated the household secondary attack rate (HSAR) of patients with coronavirus disease (COVID-19) during the omicron variant-dominant period. The HSAR of COVID-19 cases during the omicron variant-dominant period (4–20 January 2022) was calculated… read more here.
Keywords: omicron variant; household contacts; variant dominant; secondary attack ... See more keywords
[Analysis on the household secondary attack rates of the SARS-CoV-2 Delta variant and the associated factors].
Sign Up to like & getrecommendations! Published in 2023 at "Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]"
DOI: 10.3760/cma.j.cn112150-20220526-00535
Abstract: Objective: To evaluate the household secondary attack rates of the SARS-CoV-2 Delta variant and the associated factors. Methods: A COVID-19 outbreak caused by the Delta variant occurred in Nanjing in July 2021. A total of… read more here.
Keywords: associated factors; household; delta variant; secondary attack ... See more keywords