Acesso livre
Acesso livre

Covid-19 (Temas de Saúde Pública)

Como a impressionante capacidade de replicação da variante Delta lança novos desafios sobre a pandemia de Covid-19.

17 Set, 2021 | 13:04h

How the Delta variant’s remarkable ability to replicate threw new twists into the Covid-19 pandemic – STAT

Estudo observacional em Israel sugere proteção adicional da terceira dose da vacina da Pfizer em pessoas com mais de 60 anos de idade.

17 Set, 2021 | 12:42h

Protection of BNT162b2 Vaccine Booster against Covid-19 in Israel – New England Journal of Medicine

Terceira dose: Reino Unido oferece doses de reforço da vacina contra COVID para maiores de 50 anos de idade.

17 Set, 2021 | 12:40h

Third shot: UK to offer COVID booster jabs to over 50s – Associated Press

Efeitos da vacina contra COVID diminuem ao longo do tempo, mas continuam prevenindo morte e doença grave.

17 Set, 2021 | 12:39h

COVID vaccine effects wane over time but still prevent death and severe illness – The Conversation

Conteúdos relacionados:

Perspective | What we actually know about waning immunity.

Another study shows Pfizer mRNA vaccine immunity is reduced over time.

[Press release – not published yet] Study shows vaccine protection wanes over time, but vaccines still offer good protection against severe disease.

Studies: COVID vaccine protection waning against infection but not hospitalization.

Pfizer says it’s time for a Covid booster; FDA and CDC say not so fast.

Casos globais de COVID-19 mostram queda substancial.

17 Set, 2021 | 12:37h

Global COVID-19 cases show substantial drop – CIDRAP

Perspectiva | Escolas começaram testagem em massa para COVID-19, mas obstáculos e incertezas permanecem.

17 Set, 2021 | 12:36h

Schools have begun mass testing for COVID-19. But hurdles and uncertainties remain – Science

Conteúdo relacionado: Cluster RCT: Daily contact testing of school-based contacts was non-inferior to self-isolation for control of COVID-19 transmission.

Perspectiva | Países com “COVID zero” poderão continuar mantendo o vírus sob controle?

17 Set, 2021 | 12:35h

Can ‘zero COVID’ countries continue to keep the virus at bay once they reopen? – Science

Revisão sistemática | Cigarros eletrônicos podem ajudar as pessoas a pararem de fumar? E eles têm algum efeito indesejado quando usados para este objetivo?

17 Set, 2021 | 12:26h

Resumo: Can electronic cigarettes help people stop smoking, and do they have any unwanted effects when used for this purpose? – Cochrane Library

Estudo original: Electronic cigarettes for smoking cessation – Cochrane Library

 

Comentário no Twitter

 

Estudo randomizado por cluster | Teste diário dos contatos de pessoas infectadas foi não-inferior ao autoisolamento para controlar a transmissão da COVID-19 nas escolas.

17 Set, 2021 | 12:12h

Daily testing for contacts of individuals with SARS-CoV-2 infection and attendance and SARS-CoV-2 transmission in English secondary schools and colleges: an open-label, cluster-randomised trial – The Lancet

Comentário convidado: Daily antigen testing to reduce disruption when schools return – The Lancet

Revisão | Prevenção da transmissão de hospedeiro para hospedeiro através das vacinas contra SARS-CoV-2.

17 Set, 2021 | 12:09h

Prevention of host-to-host transmission by SARS-CoV-2 vaccines – The Lancet Infectious Diseases

Conteúdos relacionados:

Study ties COVID vaccines to lower transmission rates.

Effect of Vaccination on Household Transmission of SARS-CoV-2 in England – “the likelihood of household transmission was approximately 40 to 50% lower in households of index patients who had been vaccinated 21 days or more before testing positive than in households of unvaccinated index patients”.

Study in England showed one dose of COVID-19 vaccine can cut household transmission by up to half – This protection is on top of the reduced risk of a vaccinated person developing symptomatic infection, which is around 60 to 65% after the first dose

Covid-19 vaccination prevents transmission from vaccinated to unvaccinated household members.

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