Weekly round up of useful / reliable English covid statistics:

1. Incidence
2. Care home outbreaks
3. Hospital / ICU admissions and deaths
4. Covid triage
5. Cases
6. Contact tracing
7. Mortality
8. Miscellaneous: nosocomial

#ahcveng
1. Incidence

ONS shows continued increase in incidence as the seasons change, driven by areas of the country subject to enhanced lockdown restrictions.

Great news: clear divergence between incidence in the vulnerable >70 versus younger age groups.

ons.gov.uk/peoplepopulati…
(Caution due on the NE/Yorks piece of that chart: doesn't tally with the Zoe incidence data, which otherwise generally ties in well with ONS).

2. Care home outbreaks

Another bad week. Somebody suggested that this might be picking up staff cases, but NHS now publish hospital admissions from care homes showing an increase.

Care homes now 25% of institutional outbreaks.

assets.publishing.service.gov.uk/government/upl…

england.nhs.uk/statistics/sta…
3. Hospital / ICU admissions and deaths

Extreme variance across the country in both level and trajectory, though we are far off the spring peak.

Admissions include nosocomial (hospital-acquired) cases: see 8 below

coronavirus.data.gov.uk/healthcare?are…

england.nhs.uk/statistics/sta…
Healthcare burden: Covid inpatients in hospital and mechanical ventilation beds ("ICU"?) show very significant differences in both level and trajectory across the country.

So a one-size-fits-all approach to protect hospital capacity is clearly nonsense.
4. Covid triage

Still no surge in triage calls from over 70s, which should be a "canary in the coalmine" of an approaching spike in hospital admissions.

Back-to-school spike seems to have receded.

digital.nhs.uk/data-and-infor…
5. Cases

coronavirus.data.gov.uk/cases?areaType…

3 recent days around 18,000 cases per day; trajectory unclear.

Variance across the country: compare for example South West and North West.

Much recent growth seems to be universities, so should subside:
If you thought that the total of 'cases' is the number of people who've tested positive, you're wrong.

New PHE protocol is that people can only be included in the figures once per week, depending on day of the week. Welcome to the funny farm.

gov.uk/government/pub…
6. Contact tracing

Now an expensive, embarrassing irrelevance: the slippage at every stage is dreadful.

77% positive tests reached
85% provided contacts
58% contacts reached and asked to isolate
(We know that only ~10% will comply fully)

gov.uk/government/col…
7. Mortality

All-cause mortality (ONS) at around 2005 levels, although some will be catch-up from 2019's very low level.

Standardised mortality from ONS & actuaries, published monthly, the best to look at this - same pattern.



ons.gov.uk/peoplepopulati…
8. Miscellaneous: Nosocomial

CEBM (Oxford) have made a stab at calculating hospital-acquired (nosocomial) infections using NHS data: cebm.net/covid-19/proba…

Worrying given the mortality of these infections: Royal Glamorgan now 38 deaths from c.150 cases: bbc.co.uk/news/uk-wales-…
[Postscript: @ActuaryByDay has just published an updated thread on English ICU covid cohort, well worth a read: ]

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More from @AlistairHaimes

9 Oct
Weekly round up of useful / reliable English covid statistics:

1. Incidence
2. Care home outbreaks
3. Hospital / ICU admissions and deaths
4. Covid triage
5. Cases
6. Contact tracing
7. Mortality
8. Miscellaneous: ICU, France & Spain, GB Dec

#ahcveng
1a. Incidence

Zoe (KCL CSS) suggests incidence is slowing after a steep rise, whereas ONS and Imperial (REACT1) show sharp recent rise.

covid.joinzoe.com/data

ons.gov.uk/peoplepopulati…

imperial.ac.uk/media/imperial…
1b. Incidence

Note sharp age distinction in ONS / REACT1; if you favour the "GB Declaration" approach (see below) you would want the difference between young and old incidence and trajectory as great as possible

ons.gov.uk/peoplepopulati…
Read 14 tweets
2 Oct
Weekly round up of useful / reliable English covid statistics:

1. Incidence
2. Care home outbreaks
3. Hospital & ICU admissions and deaths
4. Covid triage
5. Cases
6. Contact tracing
7. The Vallance-tracker
8. Mortality
9. Miscellaneous

#ahcveng
1a. ONS incidence

The headline is that during the most recent week (18 to 24 September) there were around 8,400 new infections per day not including those living in institutional settings, *down* from 9,600 previous week.

Still not rising in the elderly

ons.gov.uk/peoplepopulati… ImageImageImage
1b. Other incidence

We also had the Imperial "REACT1" interim incidence report this week which also pointed to a slowdown, and the KCL Zoe app (tracking symptomatic cases) points in the same direction

imperial.ac.uk/media/imperial…

covid.joinzoe.com/data ImageImage
Read 18 tweets
25 Sep
Weekly round up of useful / reliable English covid statistics:

1. Cases
2. Care home outbreaks
3. Hospital deaths / admissions
4. Covid triage
5. Prevalence
6. Contact tracing
7. The Vallance-tracker
8. Mortality
9. Miscellaneous

#ahcveng
1. Cases

1a. Pillars 1&2 - last couple of weeks & last month (current wave) & full curve. Bear in mind the left-hand side was heavily rationed for testing, the right-hand side far less so: the 'two waves' are not comparable.

Source: Gov dashboard coronavirus.data.gov.uk/cases?areaType…
1. Cases

1b. English pillar 1 (clinical need / NHS) and pillar 2 (community swab) cases and % positive. The left-hand side was heavily rationed for testing, the right-hand side *far* less so.

Source: PHE covid surveillance report
assets.publishing.service.gov.uk/government/upl…
Read 15 tweets
24 Sep
"The scrutiny provided by our legislature was absent when it was most required.

The social costs of lockdown are extraordinary: the burden of proof for every day it was maintained should have been more extraordinary still. +
"It should never have been down to a cabinet, let alone the coronavirus quad or a poorly prime minister, to decide when rights we have taken for granted since Magna Carta should be restored: their suspension should have needed justifying daily, with the bar set high. +
We should be profoundly concerned at the precedent: the legislation was fatally flawed by the omission of a dead man’s switch, such that civil liberties would be restored automatically the moment their suspension was not overwhelmingly and objectively justified. +
Read 5 tweets
18 Sep
1. Cases

1a. Pillars 1&2 - last couple of weeks & last month (current wave) & full curve. Bear in mind the left-hand side was heavily rationed for testing, the right-hand side far less so: the 'two waves' are not comparable.

Source: Gov dashboard coronavirus.data.gov.uk/cases?areaType…
1. Cases

1b. English pillar 1 (clinical need & NHS) cases and % positive. Again, bear in mind that the left-hand side was heavily rationed for testing, the right-hand side *far* less so. Positivity currently 1.6%

Source: PHE covid surveillance report
assets.publishing.service.gov.uk/government/upl…
2. Care home outbreaks

*Critical data*. In week 37 there were 10x more outbreaks in care homes than in food outlets and restaurants; interventions targeted at the latter would be pointless.

Source: weekly PHE report as above
Read 9 tweets
15 Sep
On Friday evenings I'm going to release a thread like this on English covid data that I think is useful / reliable. If you don't want to follow the rest of my ranting, the # will be #ahcveng

• Cases: pillar 1
• Care home outbreaks
• Hospital deaths & admissions
• Sundry
1. English pillar 1 (clinical need & NHS) cases and % positive

Source: weekly PHE surveillance report

assets.publishing.service.gov.uk/government/upl…

#ahcveng Image
1a: why not pillar 2? Because I regard the data as corrupted by door-to-door testing of asymptomatic cases in hotspot areas, and testing of children / students with mild symptoms which will 🔼% positive while 🔽 usefulness (more non-infectious high Ct "weak" positives). Image
Read 8 tweets

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