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Eric Feigl-Ding Profile picture
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16 Jun, 11 tweets, 5 min read
DIFFERENT SYMPTOMS—‘Loss of smell’ is no longer a top 10 symptom of the new #DeltaVariant. A headache, sore throat & runny nose are now the most common. New study says catching Delta #COVID19 can feel different— "more like a bad cold" for younger people.🧵
bbc.com/news/health-57…
2) Since the start of May, we have been looking at the top symptoms in the app users - and they are not the same as they were," he says.
The change appears linked to the rise in the Delta variant, first identified in India and now accounting for 90% of Covid cases in the UK.
3) Fever remains quite common but loss of smell no longer appears in the top 10 symptoms, Prof Spector says.

"This variant seems to be working slightly differently," he says.
4) "People might think they've just got some sort of seasonal cold and they still go out to parties and they might spread around to six other people.
"We think this is fuelling a lot of the problem.
5) "The message here is that if you are young, you are going to get milder symptoms anyway.
"It might just feel like a bad cold or some funny 'off' feeling - but do stay at home and do get a test."
6) The #DeltaVariant is also more contagious than the earlier strains and have much higher risk of hospitalization… how much? Well depends on compared to the #AlphaVariant B117 or the original strain.
7) Another reason why the CDC has now just declared #DeltaVariant an upgraded risk level of “variant of concern”….
8) I worry if this could mean #LongCovid via the #DeltaVariant could also be very different- possibly worse given it has higher hospitalization risks. It might be more than 1 in 4 but will have to see.
9) I worry about #LongCovid a lot because it is something that one can being burdened with for a long time, and burdens the healthcare system and medical care costs. We should avoid Covid mild illness too to avoid long Covid. Because you don’t want this… ⬇️
10) I would say “loss of grey matter” brain 🧠 damage kind of counts as #LongCovid.
11) Around 1 in 12 children who've been infected report enduring #LongCovid symptoms.

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More from @DrEricDing

Eric Feigl-Ding Profile picture
17 Jun
⚠️Confirmed—#DeltaVariant is by far the *most contagious** variant found to date, with a transmissibility that is ~2x faster than older strain. #P1 is 2nd fastest, says @WHO study.🧵

📍#B117 #Alpha—29% faster

📍#B1351 #Beta—25%

📍#P1 #Gamma—38%

📍#B16172 #Delta—97% #COVID19 Image
2) “Effective reproduction number of SARS-CoV-2 variants of concern/interest compared against each other, 64 countries, data until 3 June 2021”
eurosurveillance.org/content/10.280… Image
3) “Of the six variants currently designated as VOI, five were considered in our analysis and among these, only B.1.617.1 (#Kappa) and B.1.525 #Eta demonstrated a statistically significant increase in the effective reproduction number of 48% and 29%, respectively.” Image
Read 22 tweets
Eric Feigl-Ding Profile picture
17 Jun
Top question asked right now: what to do about J&J 1-shot #COVID19 vaccine & rise of #DeltaVariant? Not medical advice: lots of immunologists are hypothesizing & predicting mixing vaccines of different types could yield equal/better response. Trials TBD.🧵
bloombergquint.com/coronavirus-ou…
2) “If you can mix and match, it’s going to look better, something that immunologists have known for decades” said Danny Altmann, professor of immunology. “I’d bet my house on working hypothesis that it’s doable and would produce immunity that’s at least as good if not better.”
3) “After years of reading research on mixing vaccine types -- known as heterologous prime-boosting -- Morgon concluded that getting one dose of the AstraZeneca shot, and another from Moderna Inc.’s or Pfizer Inc.’s newer messenger RNA technology would pack the most punch.”
Read 9 tweets
Eric Feigl-Ding Profile picture
17 Jun
Jeez—an explosive 968% spike in #COVID19 in just one week—where the G7 Summit recently took place (and many security planners arrived 2 weeks ago). Is this related to the #G7Cornwall #G7Summit2021? Hmm, but a ~1000% increase is not something seen everyday.

HT @Dr_D_Robertson. Image
2) We can debate whether it’s because it started from a low base. But going up that fast is not normal at all. UK is very concerned about the spike there too. google.com/amp/s/www.bbc.…
3) Dr Ruth Goldstein said they were mainly Delta variant cases in under-30s.

Public health consultant, Dr Goldstein, said the rise was thought to be down to people from Cornwall travelling out and back during the school half-term break, as well as people coming in.
Read 10 tweets
Eric Feigl-Ding Profile picture
17 Jun
“Double wave” is coming—An internal NHS email sent to hospitals warn them to prepare for a 3rd #COVID19 wave with the 96% dominant #DeltaVariant - at the same time as a spike in serious infections among very young children. 🧵
channel4.com/news/hospitals…
2) The email, sent by a London NHS trust to clinical staff, says “national guidance on planning” has been issued telling hospitals to expect 50 per cent of the Covid cases seen in the first wave of the pandemic.
3) At the same time the third wave of severe Covid cases is likely to peak in hospitals, in early August, NHS leaders are also predicting a national wave of Respiratory Syncytial Virus or RSV infections.
Read 10 tweets
Eric Feigl-Ding Profile picture
17 Jun
Two patients positive for the #DeltaVariant in Calgary🇨🇦 have died. One death was in patient with 2 doses of #COVID19 vaccine and fully immunized. Although patient in 80s for age, it also suggestive of incomplete protection against Delta. Must be cautious.
calgaryherald.com/news/local-new…
2) Delta Variant is more contagious and much more severe.
3) It took the CDC a long time to declare #DeltaVariant a variant of concern, even though @WHO declared it 3 weeks ago.
Read 5 tweets
Eric Feigl-Ding Profile picture
16 Jun
Over 500 fully vaccinated tested positive for #COVID19 in Massachusetts in <3 weeks. As of June 5, 3,641 cases among ~3.5 mil fully vaccinated in MA–likely undercount due to lower testing in vaccinated. Yet CDC stopped counting unless hospitalized/dead🧵
nbcboston.com/news/local/mor…
2) According to the U.S. Centers for Disease Control and Prevention, a total of 10,262 breakthrough infections were reported throughout the country as of April 30, at which time 101 million people had been vaccinated.
3) More cases have likely gone unreported, federal officials have said, because they only have data from 46 states and territories. Additionally, most vaccinated people don't show symptoms that are serious enough to get tested.
Read 10 tweets

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