BD Dataplan - Bart Bolkestein Profile picture
May 17, 2021 11 tweets 8 min read Read on X
✈️Flying during COVID19 - the numbers

COVID19-figures on aviation are rare.
A thread about (the search for) this data.

We've collected 4.400 flights with at least one contagious(!) person.

Corona spreads its wings… ⬇️🧵
✈️Flying during COVID19 - the numbers

COVID19 & variants spread worldwide, also by aviation.
Despite precautions like PCR- and Antigen-tests.

Why are there no figures?
● Commercial interests?
● Inconvenient? (we want to travel)
● Too difficult?

No... it's not too difficult.
✈️Flying during COVID19 - the numbers

Fortunately, some countries share flights with contagious COVID19-persons, to alert other passengers.

From 5 websites we've collected:
● 4.428 international "affected"-flights
● 962 flightnumbers
● 98 airlines
● 82 countries

Coverage:
✈️Flying during COVID19 - the numbers

Detail: Canada

Percentage of incoming affected flights:

April 2021 (image 1):
#India 100% = every flight!
#UAE 70%
#Qatar 58%

Per month, in 2021 (image 2):
#Delhi (IN): 183 flights = 67%
#Amsterdam (NL): 54 flights = 19%
✈️Flying during COVID19 - the numbers

How many affected persons per flight?

Hard to tell for the Canada-data. It mentions 3 "rows" around the person.
E.g. an affected person (or group, like a family) is on row 5, the site reports: "Rows 2 to 8".

Often you see several blocks:
✈️Flying during COVID19 - the numbers

Do other sources mention the number of affected persons per flight?

#Australia: only the rows
#Norway: no details
but...
#HongKong: the exact number of affected persons on board can be calculated

E.g. 3 persons on flight CX2780:
✈️Flying during COVID19 - the numbers

Detail: Hong Kong (1/2)

Top-12 flights with the most affected persons on board:
● Highest number per flight: 47 people
● 3 flights in April 2021
● only 5 different countries
● 5x #Emirates in 2.5 weeks (16 June 20 - 4 July 20)
✈️Flying during COVID19 - the numbers

Detail: Hong Kong (2/2)

Average number of contagious persons on board:
● by airline: #Vistara: 8.3 (image 1)
● by country of departure: #Nepal: 5.1 (image 2)
✈️Flying during COVID19 - the numbers

Currently #travelbans are discussed.
Is a ban effective?

It depends, some bans can be avoided with a stopover.
With all the extra risks that come along like extra traveltime, tests, hotel, airport.
E.g. India to The Netherlands via stopover
✈️Flying during COVID19 - the numbers

The flights, interactive charts and tables can be found on our website:
bddataplan.nl/corona/covidfl…

With 4.428 flights this table is (I believe) the only open data source with this kind of flight data. The data may be used.
✈️Flying during COVID19 - the numbers

The data is gathered from hundreds of screens, files and documents, and manually corrected.

Thanks a million🙏
@CPHO_Canada, @newsgovhk, @Folkehelseinst, @NSWHealth and @WAHealth for publishing this data
@internetarchive
#Flightera

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More from @BDDataplan

Jan 24, 2022
⚠️De RIVM cijfers minder betrouwbaar

Daarom eerst GGD-teststraat gegevens:
Datum: eergisteren 22-1
🔹59.677 positief
🔹45,1% positief
🔹132.418 testen Image
24-01 #COVID19NL

RIVM
● Positief getest +64.757
week: +343.331 (+43%)
● Overleden +8

LCPS bezetting / opname
● IC 262 (-13) / +10
● Kliniek 879 (+61) / +127

bddataplan.nl/corona
● zelftestregistratie & clusters (registreer🙏)
● COVID19 vluchten
● NL/regio/gemeente ImageImageImage
Er komen nu bijzonder afwijkende dagwaarden binnen, als we vergelijken met de laatste 7 of 17 dagen.
Per GGD regio:
🔹GGD Limburg-Noord @ggdln (op 409%)
🔹GGD Brabant-Zuidoost @GGDBZO (op 40%) Image
Read 5 tweets
Oct 28, 2021
Zijn er cijfers Gevaccineerd ↔️ Niet-gevaccineerd?

Ja! Het RIVM meldt positieve testen (tijdvak van 6 weken) uitgesplitst naar #vaccinatiestatus

Na 11 weken:
● toename gevaccineerd van 12% naar 34%
● afname niet-gevaccineerd van 58% naar 48%

Bron: rivm.nl/coronavirus-co…
🧵
De oude versies van de RIVM-tabel zijn niet online beschikbaar (gelukkig heb ik back-ups😅)

Afb.1: De RIVM-gegevens zijn uitgesplitst per leeftijdsgroep
Afb.2: Berekening van % per vaccinatiestatus
Er zijn (tenminste) twee kanttekeningen bij de eerste afbeelding van dit draadje:
- het betreft een periode waarbinnen de vaccinatiegraad niet constant is (is namelijk gestegen)
- er is veel verschil in de onderliggende gegevens per leeftijdsgroep
🤔
Daarom meer details:
Read 9 tweets
Jan 21, 2021
🧵
Lansingerland cijfer-update

De gemeente waar de 1e uitbraak van de 🇬🇧Britse B.1.1.7 variant werd gevonden, waarop @GGD_RR en @ErasmusMC en @Lansingerland de ca. 63.000 inwoners opriepen voor een test.

Gisteren zijn nieuwe cijfers op het dashboard van @GGD_RR geplaatst
Het RIVM meldde afgelopen dinsdag al op rivm.nl/nieuws/opmars-… dat het testen in Lansingerland het landelijk percentage positief met 0,7% omlaag bracht en in de GGD regio Rotterdam Rijnmond zelfs met 5,9%:
We zien een flinke toename van het aantal afgenomen testen in Lansingerland.
Er is geen grote stijging in het aantal positief getesten per week. Hierdoor is het percentage positief getest flink omlaag gegaan.
Een snelle toename van besmettingen is dus nog niet geconstateerd.
Read 6 tweets

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