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About 18,520 results

A call for an independent inquiry into the origin of the SARS-CoV-2 virus.
https://doi.org/10.1073/pnas.2202769119
Proceedings of the National Academy of Sciences of the Un... Harrison NL, Sachs JD

May 20th, 2022 - A call for an independent inquiry into the origin of the SARS-CoV-2 virus.|2022|Harrison NL,Sachs JD,|transmission,virology,virology,genetics,isolation & purification,

Diurnal biting of malaria mosquitoes in the Central African Republic indicates residual...
https://doi.org/10.1073/pnas.2104282119
Proceedings of the National Academy of Sciences of the Un... Sangbakembi-Ngounou C, Costantini C et. al.

May 17th, 2022 - SignificanceTransmission of malarial parasites occurs via the bites of Anopheles mosquitoes, whose blood-feeding behavior modulates the risk of infection. In many malaria endemic regions, eradication strategies rely on reducing transmission by targeting nocturnal blood-feeding Anopheles with insecticidal nets. However, a proportion of mosquitoes may naturally feed when humans are not protected ...

Wolbachia depletion blocks transmission of lymphatic filariasis by preventing chitinase...
https://doi.org/10.1073/pnas.2120003119
Proceedings of the National Academy of Sciences of the Un... Quek S, Cook DAN et. al.

Apr 5th, 2022 - Lymphatic filariasis is a vector-borne neglected tropical disease prioritized for global elimination. The filarial nematodes that cause the disease host a symbiotic bacterium, Wolbachia, which has been targeted using antibiotics, leading to cessation of parasite embryogenesis, waning of circulating larvae (microfilariae [mf]), and gradual cure of adult infection. One of the benefits of the anti...

The Role of Children and Young People in the Transmission of SARS-CoV-2.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8919943
The Pediatric Infectious Disease Journal; Götzinger F, Strenger V

Mar 23rd, 2022 - The Role of Children and Young People in the Transmission of SARS-CoV-2.|2022|Götzinger F,Strenger V,|epidemiology,metabolism,transmission,virology,epidemiology,transmission,virology,genetics,immunology,

How to prepare stool banks for an appropriate response to the ongoing COVID-19 pandemic...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8929558
PloS One; Groenewegen B, van Lingen E et. al.

Mar 18th, 2022 - Faecal microbiota transplantation (FMT) is an efficacious treatment for patients with recurrent Clostridioides difficile infections (rCDI). Stool banks facilitate FMT by providing screened faecal suspensions from highly selected healthy donors. Due to the ongoing coronavirus disease 2019 (COVID-19) pandemic and the potential risk of SARS coronavirus-2 (SARS-CoV-2) transmission via FMT, many sto...

SARS-CoV-2 positivity in offspring and timing of mother-to-child transmission: living s...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8924705
BMJ (Clinical Research Ed.); Allotey J, Chatterjee S et. al.

Mar 18th, 2022 - To assess the rates of SARS-CoV-2 positivity in babies born to mothers with SARS-CoV-2 infection, the timing of mother-to-child transmission and perinatal outcomes, and factors associated with SARS-CoV-2 status in offspring. Living systematic review and meta-analysis. Major databases between 1 December 2019 and 3 August 2021. Cohort studies of pregnant and recently pregnant women (including aft...

Surge of HIV, tuberculosis and COVID feared amid war in Ukraine.
https://doi.org/10.1038/d41586-022-00748-6
Nature Roberts L

Mar 17th, 2022 - Surge of HIV, tuberculosis and COVID feared amid war in Ukraine.|2022|Roberts L,|supply & distribution,statistics & numerical data,diagnosis,epidemiology,transmission,drug therapy,epidemiology,prevention & control,statistics & numerical data,epidemiology,transmission,supply & distribution,epidemiology,prevention & control,transmission,drug therapy,epidemiology,transmission,epidemiology,epidemio...

Transmission of SARS-CoV-2 delta variant (AY.127) from pet hamsters to humans, leading ...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912929
Lancet (London, England); Yen HL, Sit THC et. al.

Mar 14th, 2022 - Transmission of SARS-CoV-2 from humans to other mammals, including pet animals, has been reported. However, with the exception of farmed mink, there is no previous evidence that these infected animals can infect humans, resulting in sustained human-to-human transmission. Following a confirmed SARS-CoV-2 infection of a pet shop worker, animals in the shop and the warehouse supplying it were test...

Notes from the Field: Congenital Varicella Syndrome Case - Illinois, 2021.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911996
MMWR. Morbidity and Mortality Weekly Report; Leung J, Reid HD et. al.

Mar 11th, 2022 - Notes from the Field: Congenital Varicella Syndrome Case - Illinois, 2021.|2022|Leung J,Reid HD,Morgan J,Kadyk H,Havener G,|diagnosis,diagnosis,transmission,

Evolution of the SARS-CoV-2 spike protein in the human host.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8897445
Nature Communications; Wrobel AG, Benton DJ et. al.

Mar 6th, 2022 - Recently emerged variants of SARS-CoV-2 contain in their surface spike glycoproteins multiple substitutions associated with increased transmission and resistance to neutralising antibodies. We have examined the structure and receptor binding properties of spike proteins from the B.1.1.7 (Alpha) and B.1.351 (Beta) variants to better understand the evolution of the virus in humans. Spikes of both...

SARS-CoV-2 B.1.1.529 (Omicron) Variant Transmission Within Households - Four U.S. Juris...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8893332
MMWR. Morbidity and Mortality Weekly Report; Baker JM, Nakayama JY et. al.

Mar 4th, 2022 - The B.1.1.529 (Omicron) variant, first detected in November 2021, was responsible for a surge in U.S. infections with SARS-CoV-2, the virus that causes COVID-19, during December 2021-January 2022 (1). To investigate the effectiveness of prevention strategies in household settings, CDC partnered with four U.S. jurisdictions to describe Omicron household transmission during November 2021-February...

Quantifying pupil-to-pupil SARS-CoV-2 transmission and the impact of lateral flow testi...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888696
Nature Communications; Leng T, Hill EM et. al.

Mar 3rd, 2022 - A range of measures have been implemented to control within-school SARS-CoV-2 transmission in England, including the self-isolation of close contacts and twice weekly mass testing of secondary school pupils using lateral flow device tests (LFTs). Despite reducing transmission, isolating close contacts can lead to high levels of absences, negatively impacting pupils. To quantify pupil-to-pupil S...

Travel ban effects on SARS-CoV-2 transmission lineages in the UAE as inferred by genomi...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8890736
PloS One; Henschel A, Feng SF et. al.

Mar 3rd, 2022 - Global and local whole genome sequencing of SARS-CoV-2 enables the tracing of domestic and international transmissions. We sequenced Viral RNA from 37 sampled Covid-19 patients with RT-PCR-confirmed infections across the UAE and developed time-resolved phylogenies with 69 local and 3,894 global genome sequences. Furthermore, we investigated specific clades associated with the UAE cohort and, th...

Wolfgang Preiser-co-discoverer of SARS-CoV-2 variants.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8865885
The Lancet. Infectious Diseases; Kirby T

Feb 27th, 2022 - Wolfgang Preiser-co-discoverer of SARS-CoV-2 variants.|2022|Kirby T,|transmission,genetics,isolation & purification,prevention & control,

Transmission of and Infection With COVID-19 Among Vaccinated and Unvaccinated Attendees...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8881767
JAMA Network Open; Wienkes H, Vilen K et. al.

Feb 26th, 2022 - Characterizing rates of SARS-CoV-2 infection among vaccinated and unvaccinated persons with the same exposure is critical to understanding the association of vaccination with the risk of infection with the Delta variant. Additionally, evidence of Delta variant transmission by children to vaccinated adults has important public health implications. To characterize transmission and infection of SA...

Association of COVID-19 Quarantine Duration and Postquarantine Transmission Risk in 4 U...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8881770
JAMA Network Open; Liu AB, Davidi D et. al.

Feb 26th, 2022 - Optimal quarantine length for COVID-19 infection is unclear, in part owing to limited empirical data. To assess postquarantine transmission risk for various quarantine lengths and potential associations between quarantine strictness and transmission risk. Retrospective cohort study in 4 US universities from September 2020 to February 2021, including 3641 university students and staff who were i...

Antigen Test Positivity After COVID-19 Isolation - Yukon-Kuskokwim Delta Region, Alaska...
https://doi.org/10.15585/mmwr.mm7108a3
MMWR. Morbidity and Mortality Weekly Report; Lefferts B, Blake I et. al.

Feb 25th, 2022 - Isolation is recommended during acute infection with SARS-CoV-2, the virus that causes COVID-19, but the duration of infectiousness varies among individual persons. Rapid antigen test results have been correlated with detection of viable virus (1-3) and might inform isolation guidance, but data are limited for the recently emerged SARS-CoV-2 B.1.1.529 (Omicron) variant. On January 5, 2022, the ...

Genomic assessment of quarantine measures to prevent SARS-CoV-2 importation and transmi...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8866425
Nature Communications; Aggarwal D, Page AJ et. al.

Feb 25th, 2022 - Mitigation of SARS-CoV-2 transmission from international travel is a priority. We evaluated the effectiveness of travellers being required to quarantine for 14-days on return to England in Summer 2020. We identified 4,207 travel-related SARS-CoV-2 cases and their contacts, and identified 827 associated SARS-CoV-2 genomes. Overall, quarantine was associated with a lower rate of contacts, and the...

Audio Interview: Understanding the Omicron Variant of SARS-CoV-2.
https://doi.org/10.1056/NEJMe2202699
The New England Journal of Medicine; Rubin EJ, Baden LR et. al.

Feb 24th, 2022 - Audio Interview: Understanding the Omicron Variant of SARS-CoV-2.|2022|Rubin EJ,Baden LR,Morrissey S,|blood,epidemiology,immunology,transmission,virology,history,genetics,pathogenicity,physiology,epidemiology,immunology,

Effectiveness of face masks in blocking the transmission of SARS-CoV-2: A preliminary e...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8865648
PloS One; Mello VM, Eller CM et. al.

Feb 24th, 2022 - In 2019, a novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is transmitted via the airborne route, caused a new pandemic namely, "coronavirus disease 2019" (COVID-19). Although the effectiveness of face masks to prevent the transmission of SARS-CoV-2 is debated, no study has evaluated the virus-blocking efficacy of masks used by patients. We aimed to evaluate this effic...