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Vaccines

[Preprint] Serological responses to COVID-19 booster vaccine in England.

26 Nov, 2021 | 08:34h | UTC

Serological responses to COVID-19 booster vaccine in England – medRxiv

 

Commentary from the author on Twitter (thread – click for more)

 

WHO Interim statement on COVID-19 vaccination for children and adolescents.

25 Nov, 2021 | 10:49h | UTC

Interim statement on COVID-19 vaccination for children and adolescents – World Health Organization

 

Perspective: COVID-19 vaccine makers plan for annual boosters, but it’s not clear they’ll be needed.

25 Nov, 2021 | 10:43h | UTC

COVID-19 Vaccine Makers Plan for Annual Boosters, but It’s Not Clear They’ll Be Needed – JAMA

 

Do vaccines protect against long COVID? What the data say – “Vaccines reduce the risk of developing COVID-19 — but studies disagree on their protective effect against long COVID”.

25 Nov, 2021 | 10:41h | UTC

Do vaccines protect against long COVID? What the data say – Nature

Related:

EuGMS Guidance: Management of post-acute COVID-19 patients in geriatric rehabilitation.

Addressing Post-COVID Symptoms: A Guide for Primary Care Physicians.

Global surveillance, research, and collaboration needed to improve understanding and management of long COVID.

Provocative study suggests that persistent physical symptoms after COVID-19 infection may be associated more with the belief in having been infected with SARS-CoV-2 than with having laboratory-confirmed COVID-19 infection.

Update to post-acute sequelae of SARS-CoV-2 infection: Caring for the ‘long-haulers’.

Systematic Review: Short-term and long-term rates of postacute sequelae of SARS-CoV-2 infection.

WHO Consensus: A clinical case definition of post COVID-19 condition (Long Covid).

Characterizing long COVID: a living systematic review.

Long Covid – The illness narratives.

New guidelines to help doctors manage long COVID patients published.

M-A: More than 50 long-term effects of COVID-19. (several articles on the subject)

 

Commentary on Twitter

 

Promoting COVID-19 vaccine acceptance: recommendations from the Lancet Commission on Vaccine Refusal, Acceptance, and Demand in the USA.

24 Nov, 2021 | 08:47h | UTC

Promoting COVID-19 vaccine acceptance: recommendations from the Lancet Commission on Vaccine Refusal, Acceptance, and Demand in the USA – The Lancet

Related: WHO Guidance for improving acceptance and uptake of COVID-19 vaccines

 

[Preprint] Systematic Review: Duration of Effectiveness of Vaccines Against SARS-CoV-2 Infection and COVID-19 Disease – “effectiveness against COVID-19 severe disease remained high (>70%) in most studies in the six months after full vaccination, although it did decrease some (on average, 8-10 percentage points) between one and six months after full vaccination”.

23 Nov, 2021 | 08:57h | UTC

Duration of Effectiveness of Vaccines Against SARS-CoV-2 Infection and COVID-19 Disease: Results of a Systematic Review and Meta-Regression – Preprints with The Lancet – SSRN

Related:

Correlation of SARS-CoV-2-breakthrough infections to time-from-vaccine.

China’s COVID vaccines have been crucial — now immunity is waning.

[Preprint] Breakthrough SARS-CoV-2 infections in 620,000 U.S. Veterans, February 1, 2021 to August 13, 2021 – “Vaccine protection declined by mid-August 2021, decreasing from 91.9% in March to 53.9%”.

Observational study in Qatar showed the effectiveness of Pfizer vaccine against any SARS-CoV-2 infection dropped to 20% in months 5 through 7 after the second dose, but effectiveness against severe Covid-19 remained high.

Cohort study: Pfizer vaccine effectiveness against any infections declined from 88% during the first month after full vaccination to 47% after 5 months. Vaccine effectiveness against hospital admissions remained high; 87% within 1 month, and 88% at 5 months after full vaccination, with no significant waning.

Editorial | Covid-19 vaccination: evidence of waning immunity is overstated.

COVID vaccine immunity is waning — how much does that matter? – “As debates about booster shots heat up, what’s known about the duration of vaccine-based immunity is still evolving”.

COVID vaccine effects wane over time but still prevent death and severe illness.

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.

 

Systematic Review: Vaccines for preventing rotavirus diarrhea.

24 Nov, 2021 | 08:20h | UTC

Vaccines for preventing rotavirus diarrhoea: vaccines in use – Cochrane Library

Summary: Are rotavirus vaccines safe and effective in preventing rotavirus diarrhoea in infants and children? – Cochrane Library

Commentary: Vaccines for preventing rotavirus diarrhoea: an updated Cochrane review – Cochrane Library

 

Populational study in France did not show an increased incidence of acute myocardial infarction, stroke, and pulmonary embolism following the Pfizer vaccine.

23 Nov, 2021 | 08:51h | UTC

Myocardial Infarction, Stroke, and Pulmonary Embolism After BNT162b2 mRNA COVID-19 Vaccine in People Aged 75 Years or Older – JAMA

 

United States FDA clears COVID vaccine boosters for all adults over 18 – Pfizer & Moderna 6 months after second jab.

21 Nov, 2021 | 23:17h | UTC

United States FDA Clears COVID Vaccine Boosters for All Adults Over 18 – Pfizer & Moderna 6 Months After Second Jab – Health Policy Watch

See also:

FDA expands emergency authorization for Covid-19 booster shots to all adults – STAT

FDA, CDC advisors approve COVID boosters for all US adults – CIDRAP

FDA Approves Both Pfizer, Moderna Boosters for All Adults – HealthDay

 

No, vaccinated people are not ‘just as infectious’ as unvaccinated people if they get COVID.

21 Nov, 2021 | 23:05h | UTC

No, vaccinated people are not ‘just as infectious’ as unvaccinated people if they get COVID – The Conversation

 

[Not published yet] Single-dose HPV vaccine highly effective, researchers say – “Results of randomized controlled trial in Kenya bring new energy to eliminate cervical cancer worldwide”.

21 Nov, 2021 | 22:56h | UTC

Single-dose HPV vaccine highly effective, researchers say – University of Washington School of Medicine

Related:

A national HPV vaccination program in England was associated with an estimated reduction in cervical cancer rates of 87% for those offered the vaccine at age 12–13 years.

Three-year follow-up of 2-dose versus 3-dose HPV vaccine

Nationwide cohort study in Sweden shows HPV vaccination linked to reduced risk of invasive cervical cancer

CDC: 92% of Human Papillomavirus–Attributable Cancers can be Targeted by HPV Vaccination

Meta-Analysis: Population-level Impact of HPV Vaccination Programs

 

Editorial: COVID-19 vaccines for children – “Although it is true that most children experience asymptomatic or mild disease, some will get quite sick, and a small number will die. It’s why children are vaccinated against influenza, meningitis, chickenpox, and hepatitis”.

19 Nov, 2021 | 10:57h | UTC

COVID-19 vaccines for children – Science

Related: Review: Should children under 12 years of age be vaccinated against COVID-19?

 

Commentary on Twitter

 

Correlation of SARS-CoV-2-breakthrough infections to time-from-vaccine.

19 Nov, 2021 | 10:47h | UTC

Correlation of SARS-CoV-2-breakthrough infections to time-from-vaccine – Nature Communications

Commentary: Long-term effectiveness of Pfizer/BioNTech two-dose regimen mRNA vaccine – News Medical

China’s COVID vaccines have been crucial — now immunity is waning.

[Preprint] Breakthrough SARS-CoV-2 infections in 620,000 U.S. Veterans, February 1, 2021 to August 13, 2021 – “Vaccine protection declined by mid-August 2021, decreasing from 91.9% in March to 53.9%”.

Observational study in Qatar showed the effectiveness of Pfizer vaccine against any SARS-CoV-2 infection dropped to 20% in months 5 through 7 after the second dose, but effectiveness against severe Covid-19 remained high.

Cohort study: Pfizer vaccine effectiveness against any infections declined from 88% during the first month after full vaccination to 47% after 5 months. Vaccine effectiveness against hospital admissions remained high; 87% within 1 month, and 88% at 5 months after full vaccination, with no significant waning.

Editorial | Covid-19 vaccination: evidence of waning immunity is overstated.

COVID vaccine immunity is waning — how much does that matter? – “As debates about booster shots heat up, what’s known about the duration of vaccine-based immunity is still evolving”.

COVID vaccine effects wane over time but still prevent death and severe illness.

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.

 

Commentary on Twitter

 

Opinion: With 128 Covid vaccines in clinical development, we don’t know if the approved/authorized ones are the best ones.

19 Nov, 2021 | 10:45h | UTC

With 128 Covid vaccines in clinical development, we don’t know if the approved/authorized ones are the best ones – STAT

 

Perspective | The Future of SARS-CoV-2 Vaccination — Lessons from Influenza.

19 Nov, 2021 | 10:49h | UTC

The Future of SARS-CoV-2 Vaccination — Lessons from Influenza – New England Journal of Medicine

 

Review: Should children under 12 years of age be vaccinated against COVID-19?

18 Nov, 2021 | 08:56h | UTC

Should children be vaccinated against COVID-19? – Archives of Disease in Childhood

 

Commentary from the author on Twitter (thread – click for more)

 

Covid: Children in UK told to delay jab for 12 weeks after infection.

18 Nov, 2021 | 08:54h | UTC

Covid: Children told to delay jab for 12 weeks after infection – BBC

Original Report: Joint Committee on Vaccination and Immunisation (JCVI) advice on COVID-19 vaccination in people aged 16 to 17 years: 15 November 2021

 

The big questions about Covid-19 booster shots – “From the why to the who, we still need a lot of answers about booster shots”.

17 Nov, 2021 | 08:48h | UTC

The big questions about Covid-19 booster shots – Vox

 

Commentary on Twitter

 

Review: Vaccine-induced immune thrombotic thrombocytopenia.

16 Nov, 2021 | 08:46h | UTC

Vaccine-induced immune thrombotic thrombocytopenia – The Lancet Haematology

Related:

Vaccine induced immune thrombocytopenia and thrombosis: summary of NICE guidance.

Clinical features of vaccine-induced immune thrombocytopenia and thrombosis.

Review: Clinical characteristics and pharmacological management of COVID-19 vaccine–induced immune thrombotic thrombocytopenia with cerebral venous sinus thrombosis.

Vaccine-induced immune thrombotic thrombocytopenia: what we know and do not know.

Very rare cases of thrombosis with thrombocytopenia syndrome (TTS) after AstraZeneca vaccine: a global safety database analysis – the estimated rate of TTS after the first dose was 8.1 per million vaccinees; after the second dose, the estimated rate was 2.3 per million vaccinees. (several articles and resources on the subject)

 

Commentary on Twitter

 

Covid: Austria introduces lockdown for unvaccinated.

16 Nov, 2021 | 08:43h | UTC

Covid: Austria introduces lockdown for unvaccinated – BBC

See also: Austria orders nationwide lockdown for the unvaccinated – Associated Press

 

Covid-19: global vaccine production is a mess and shortages are down to more than just hoarding.

16 Nov, 2021 | 08:42h | UTC

Covid-19: global vaccine production is a mess and shortages are down to more than just hoarding – The BMJ

 

Commentary on Twitter

 

[Preprint] Risk of severe COVID-19 is rare among fully vaccinated individuals in England.

14 Nov, 2021 | 20:10h | UTC

Commentary: Risk of severe COVID-19 is rare among fully vaccinated individuals in England – News Medical

Original Study: Describing the population experiencing COVID-19 vaccine breakthrough following second vaccination in England: A cohort study from OpenSAFELY – medRxiv

 

Phase 4 RCT: Concomitant administration of COVID-19 vaccines (AstraZeneca or Pfizer) with seasonal influenza vaccines in adults is safe and preserves antibody responses to both vaccines.

14 Nov, 2021 | 20:14h | UTC

Safety and immunogenicity of concomitant administration of COVID-19 vaccines (ChAdOx1 or BNT162b2) with seasonal influenza vaccines in adults in the UK (ComFluCOV): a multicentre, randomised, controlled, phase 4 trial – The Lancet

 

Large populational study finds prior SARS-CoV-2 infection reduces the risk of breakthrough infection following mRNA vaccination.

14 Nov, 2021 | 20:12h | UTC

Association of Prior SARS-CoV-2 Infection With Risk of Breakthrough Infection Following mRNA Vaccination in Qatar – JAMA

Commentaries:

Vaccine plus previous infection may offer enhanced COVID-19 protection – CIDRAP

Prior SARS-CoV-2 infection and risk of breakthrough infection following mRNA vaccination – News Medical

 

Commentary on Twitter

 

Populational study in Qatar showed the effectiveness against SARS-CoV-2 Delta-induced severe, critical or fatal disease was 93.4% for the Pfizer vaccine and 96.1% for Moderna.

14 Nov, 2021 | 20:11h | UTC

BNT162b2 and mRNA-1273 COVID-19 vaccine effectiveness against the SARS-CoV-2 Delta variant in Qatar – Nature Medicine

 

Commentary on Twitter

 

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