Dr. John Campbell

Campbellteaching

Hello Everyone, My name is John Campbell and I am a retired Nurse Teacher and former clinical nurse based in England. I also do some teaching in Asia and Africa when time permits. These videos are to help students to learn the background to all forms of health care. My PhD focused on the development of open learning resources for nurses nationally and internationally. LinkedIn profile, https://www.linkedin.com/in/dr-john-campbell-5256223b/ Twitter, https://twitter.com/Johnincarlisle Disclaimer; These media including videos, book, e book, articles, podcasts are not peer-reviewed. They should never replace individual clinical judgement from your own health care provider. No media-based material on this channel is suitable for using as professional medical advice. All comments are also for educational purposed only and must never replace advice from your own health care provider

  1. 6h ago

    XBB 1.5, will probably catch this soon

    New Omicron Subvariant, Crazy Infectious Dr. Ashish Jha, White House COVID-19 response coordinator https://twitter.com/AshishKJha46/status/1610648627721945088 https://www.medscape.com/viewarticle/986759?src=wnl_recnlnew1_ous_230112_MSCPEDIT_&uac=127834AR&impID=5080457 Spread of XBB.1.5 is stunning 80% of Americans who've already been infected are likely to catch it again https://eu.usatoday.com/story/news/health/2023/01/06/covid-update-xbb-variant-symptoms-reinfection/10995204002/ Dr. Paula Cannon, virologist, University of Southern California It's crazy infectious All the things that have protected you for the past couple of years, I don't think are going to protect you against this new crop of variants Essentially, everyone in the country is at risk for infection now, even if they're super careful, up to date on vaccines, or have caught it before The number of severe infections and deaths remains relatively low, despite the high level of infections, US Variant Proportions https://covid.cdc.gov/covid-data-tracker/#variant-proportions All omicron BQ.1.1 34% XBB.1.5 27.6% BQ.1 21.4% XBB 4.9% BA.5 3.7% BN.1 3% SARS-CoV-2 variants of concern and variants under investigation in England Technical briefing 49 11 January 2023 https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1128554/variant-technical-briefing-49-11-january-2023.pdf Current high UK incidence England, prevalence 4.5% https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/articles/coronaviruscovid19latestinsights/infections Primarily of BQ.1 and sub-lineages Hospitalisation (BQ.1) Preliminary analysis, no increase in risk for people with BQ.1 compared to BA.5 Effectiveness of the bivalent booster against hospitalisation with BQ.1 At 2 or more weeks after receiving the booster BQ,1 50.3% BA.5 64.0% XBB First flagged, 11 October 2022 Recombinant lineage 2 BA.2 parent lineages BJ.1 and BM.1.1.1 Advantageous spike mutations from both (about 12 compared to BA.2) More receptor binding domain mutations Plus 23 non spike mutations Rapid replication in primary culture of nasal epithelium XBB.1.5, (Kraken) Currently at low prevalence, 4.5% Has a combination of immune escape and ACE-2 affinity XBB.1.5. has a 38.83% relative growth rate more than BQ.1.1 XBB is phenotypically similar to other Omicron variants, rather than to Delta or earlier variants of concern. CH.1.1 Currently at moderate prevalence Has a 21.56% relative growth rate more than BQ.1.1 Variant prevalence, 26 December 2022 to 1 January 2023 51.3% BQ.1 19.5% CH.1.1 7.2% BA.5 4.9% BA.2.75 4.5% XBB.1.5 3.6% XBB 2.1% were BA.2 0.12% BA.4.6 0.7% classified as other Reports from Variant Technical Group members Neutralisation titres against XBB are the lowest of any contemporary variant tested So, expect post vaccine and post infection breakthrough (Rapid replication in primary culture of nasal epithelium) Current reported covid symptoms in the UK https://health-study.joinzoe.com Blocked nose 57% Sore throat, 57% Runny nose, 53% Headache, 52% Cough no phlegm, 50% Sneezing, 50% Cough with phlegm, 44% Hoarse voice, 40% Muscle pains, 27% Loss of smell, 22% Fatigue, 22% Altered sense smell, 21% Dizzy, light headed, 19% Swollen neck nodes, 19% Earache, 15% Shortness of breath, 16% Chest pain / tightness, 14% Wheezing, 12% Chills / shivers, 12% Learn more about your ad choices. Visit megaphone.fm/adchoices

    XBB 1.5, will probably catch this soon
  2. 8h ago

    Post covid brain disorders

    42%increased chance of developing a neuro problem after covid, equating to 7% of those infected. Dr. Al-Aly Overall, COVID-19 has contributed to more than 40 million new cases of neurological disorders worldwide Long-term neurologic outcomes of COVID-19 https://www.nature.com/articles/s41591-022-02001-z https://newatlas.com/health-wellbeing/mild-covid-risk-brain-neurological-problems/ https://medicine.wustl.edu/news/covid-19-infections-increase-risk-of-long-term-brain-problems/ Comprehensive evaluation of postacute neurologic sequelae at 1 year National healthcare databases of the US Department of Veterans Affairs Covid cohort = 154,068 (nonhospitalized, hospitalized and admitted to intensive care) Contemporary controls = 5,638,795 Historical controls = 5,859,621 (2017 data) Average age of 61 Estimate risks and burdens of incident neurologic disorders at 12 months following acute SARS-CoV-2 infection Longitudinal observational study design March 2020 through January 2021 (predates delta, omicron and other COVID variants) Results In the postacute phase of COVID-19, there was increased risk of an array of incident neurologic sequelae Ischemic and hemorrhagic stroke TIA Cognition and memory disorders Peripheral nervous system disorders Episodic disorders (e.g. migraine, seizures) Extrapyramidal and movement disorders Mental health disorders, (anxiety depression psychosis) Musculoskeletal disorders Sensory disorders Guillain–Barré syndrome Encephalitis or encephalopathy Headaches Hazard ratio of any neurologic sequela 1.42 (1.38 to 1.47) Burden 70.69 (63.54 to 78.01) per 1,000 persons at 12 months Or, 7.069% The risks and burdens were elevated even in people who did not require hospitalization during acute COVID-19 Risks and burdens increased according to the severity of the acute infection, from nonhospitalized to hospitalized to intensive care Dizzynes Taken together, our results provide evidence of increased risk of long-term neurologic disorders in people who had COVID-19. Incident neurologic outcomes in COVID-19 versus contemporary control Cerebrovascular disorders (at 12 months) Ischemic stroke HR 1.50, burden 3.40 per 1,000 Transient ischemic attacks HR 1.62, burden 2.03 Hemorrhagic stroke HR 2.19, burden 0.21 Cerebral venous thrombosis HR 2.69, burden 0.05 Composite of these cerebrovascular outcomes were HR 1.56, burden 4.92 Cognition and memory Risks of memory problems HR 1.77, burden 10.07 Alzheimer’s disease HR 2.03, burden 1.65 Composite of these cognition and memory outcomes were HR 1.80, Burden 10.35 Disorders of peripheral nerves Peripheral neuropathy HR 1.34, burden 5.64 Paresthesia HR 1.32, burden 2.89 Dysautonomia HR 1.30, burden 1.60 Bell’s palsy HR 1.48, burden 0.32 Composite of these disorders of peripheral nerves were HR 1.34, burden 8.64 Episodic disorders Migraine, epilepsy and seizures, headache disorders Composite of these episodic disorders were HR 1.32, burden 4.75 Extrapyramidal and movement disorders Abnormal involuntary movements, tremor, Parkinson-like disease, dystonia, myoclonus Composite of these extrapyramidal and movement disorders were HR 1.42, burden 3.98 Mental health disorders Major depressive disorders, stress and adjustment disorders, anxiety disorders, psychotic disorders Composite of these mental health disorders were HR 1.43, burden 25.00 Musculoskeletal disorders Joint pain, myalgia, myopathy Composite of these musculoskeletal disorders were HR 1.45, burden 40.09 Sensory disorders Hearing abnormalities, tinnitus, vision abnormalities, loss of smell, loss of taste Composite of these sensory disorders were HR 1.25, burden 17.03 Other neurologic or related disorders Dizziness, somnolence, Guillain–Barré syndrome, encephalitis or encephalopathy, transverse myelitis Composite of these other neurologic or related Learn more about your ad choices. Visit megaphone.fm/adchoices

  3. 8h ago

    Excess deaths spanning all age groups

    Excess deaths, different countries and different age groups https://www.abs.gov.au/statistics/health/causes-death/provisional-mortality-statistics/latest-release In 2022 144,650 deaths that occurred by 30 September (and were registered by 30 November), which is 19,986 (16.0%) more than the historical average (compared to 2015-2019) Same period 8,160 deaths due to COVID-19 that were certified by a doctor Non covid excess deaths = 11,826 Week ending 30 December 2022 (Week 52) https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/bulletins/deathsregisteredweeklyinenglandandwalesprovisional/latest 9,517 deaths were registered in England and Wales (393 mentioned "novel coronavirus, COVID-19) The number of deaths was above the five-year average Private homes, 36.9% above, (684 excess deaths) Hospitals, 14.8% above, (537 excess deaths) Care homes 20.4% above, (371 excess deaths) Other settings 0.2% above, (1 excess death) Total excess deaths, week 52 = 1,593 Percentage change compared to 5-year average (2016 to 2019 and 2021) for week 52 20.1% Week ending 23rd December England and Wales, (week 51) All-cause deaths registered 14,530 (COVID-19 accounted for 429, 3.0%) Number of deaths was above the five-year average Private homes (37.5% above, 1,120 excess deaths) Hospitals (18.8% above, 1,031 excess deaths) Care homes (10.5% above; 282 excess deaths) Other settings (7.0% above, 61 excess deaths) in Week 51 in England and Wales. Total excess deaths, week 51 = 2,492 Excess deaths in all UK age groups https://app.powerbi.com/view?r=eyJrIjoiYmUwNmFhMjYtNGZhYS00NDk2LWFlMTAtOTg0OGNhNmFiNGM0IiwidCI6ImVlNGUxNDk5LTRhMzUtNGIyZS1hZDQ3LTVmM2NmOWRlODY2NiIsImMiOjh9 Data goes up to 18th November 2022 Investigating cause of excess deaths In 1965, English statistician Sir Austin Bradford Hill Causal relationships Strength The larger the association, the more likely that it is causal Consistency, (reproducibility) Consistent findings, different persons in different places Specificity No other likely explanation Temporality The effect has to occur after the cause (often with a delay) Biological gradient, (dose response relationship) Greater exposure should lead to greater incidence of the effect (or indeed lower incident of effect) Plausibility A plausible mechanism between cause and effect Coherence Between epidemiological and laboratory findings Experiment Occasionally it is possible to appeal to experimental evidence Analogy Analogies or similarities between the observed association and any other associations Reversibility May work if there is no permanent damage Learn more about your ad choices. Visit megaphone.fm/adchoices

    Excess deaths spanning all age groups
  4. 9h ago

    Where is herd immunity?

    Moderna boosters, recommended by FDA independent advisory panel 65 and older and for adults who are at high risk of severe illness Six months Half dose Jacqueline Miller, head of Moderna’s infectious-disease therapeutic area https://www.washingtonpost.com/health/2021/10/14/moderna-booster-shot-fda/ Six to eight months after vaccination, antibody levels dropped in vaccine recipients. A half-dose booster at least six months after initial vaccination restored antibodies levels People from original trial, a clear uptick in breakthrough infections this July and August UK ONS https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/articles/coronaviruscovid19/latestinsights#cis Week ending 9 October 2021 People that that had COVID-19 in the week Up in England, Wales and NI Down in Scotland 1.63% in England (1 in 60 people) 2.18% in Wales (1 in 45 people) 0.82% in Northern Ireland (1 in 120 people) 1.26% in Scotland (1 in 80 people) People testing positive for antibodies 93.6% Mortality displacement did not offset excess deaths by mid-2021 Some evidence of mortality displacement during the pandemic Mortality displacement, when vulnerable people die sooner than expected Potentially leading to a lower-than-average period of mortality These periods of below average mortality did not offset the high number of deaths since the beginning of the pandemic 3 January 2020 to 2 July 2021 97,981 excess deaths in England and Wales (compared to what we would expect in a non-pandemic period). Within 28 days of a positive test, 138,379 Certificated, 161,798 Zoe data https://covid.joinzoe.com/data#levels-over-time https://covid.joinzoe.com/post/third-wave-reaches-new-peak Long covid https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/articles/coronaviruscovid19/latestinsights#cis Long covid as of 5 September 2021 An estimated 1.1 million in the UK experiencing long COVID https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/articles/coronaviruscovid19/latestinsights#cis 1.7% of the total population were experiencing self-reported long COVID Up from 970,000 (1.5%) at 1 August 2021 831,000 (77%) first had (or suspected they had) COVID-19 at least 12 weeks previously 405,000 (37%) first had (or suspected they had) COVID-19 at least one year previously Symptoms adversely affected the day-to-day activities of around two-thirds (65%) of those with self-reported long COVID Fatigue (56%) Shortness of breath (40%) Loss of smell (32%) Difficulty concentrating (31%) Professor Tim Spector The UK seems to be slowly waking up to the fact that COVID cases are too high, but the reality is they’ve been soaring for months and many countries have put us on their red list. Infections remain high in young people, and look to be spilling over into the 35-55 year olds. If these increases creep into the over 55s it could spell disaster for the NHS this winter. Herd immunity https://www.youtube.com/watch?v=eJHdFOwZjVI Minimum 85% With cases so high, it’s clear that herd immunity isn't happening Current symptoms in vaccinated and children Runny nose, 76% Headache, 75% Sneezing, 66% Sore throat, 53% Cough 53% Loss of smell or taste UK official data https://coronavirus.data.gov.uk Learn more about your ad choices. Visit megaphone.fm/adchoices

About

Hello Everyone, My name is John Campbell and I am a retired Nurse Teacher and former clinical nurse based in England. I also do some teaching in Asia and Africa when time permits. These videos are to help students to learn the background to all forms of health care. My PhD focused on the development of open learning resources for nurses nationally and internationally. LinkedIn profile, https://www.linkedin.com/in/dr-john-campbell-5256223b/ Twitter, https://twitter.com/Johnincarlisle Disclaimer; These media including videos, book, e book, articles, podcasts are not peer-reviewed. They should never replace individual clinical judgement from your own health care provider. No media-based material on this channel is suitable for using as professional medical advice. All comments are also for educational purposed only and must never replace advice from your own health care provider