Fresh Pf/BNT press release on vaccine efficacy against Omikron

(check out #4/5 for CD8 T cell epitopes and severe disease!)

1/5

investors.biontech.de/news-releases/…
- preliminary laboratory studies...three doses of the Pfizer-BioNTech COVID-19 Vaccine neutralize the Omicron variant..., while two doses show significantly reduced neutralization titers

2/5
- a third dose...increases...neutralizing antibody titers by 25-fold compared to two doses against the Omicron variant

- titers after the booster...are comparable to titers...after two doses against the wild-type virus, which are associated with high levels of protection

3/5
- As 80% of epitopes in the spike protein recognized by CD8+ T cells are not affected by the mutations in the Omicron variant, two doses may still induce protection against severe disease

4/5
- ...development of a variant-specific vaccine for Omicron...expect to have it available by March in the event that an adaption is needed to further increase the level and duration of protection – with no change expected to the companies’ four billion dose capacity for 2022

5/5

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More from @Friedemann1

28 Nov
Is it possible that a variant evolves that has a CFR of more than 50%, like Ebola virus (EBOV)? Although SARS-CoV-2 has nastily surprised us already so many times, I think this is unlikely.
1/7
EBOV infects inner organs and blood vessels causing diarrhea, vomiting, and severe bleedings. Transmission occurs mainly via body fluids (Blood, Vomit, Saliva, etc). Exposed to the virus-infested fluids are hospital staff and relatives caring for the sick or washing the dead
2/7
Thus, heavy symptoms are actually helping or even required by EBOV to jump from human to human.

SARS-CoV-2, by contrast, spreads mostly through the air. For transmission, the virus only needs to replicate in cells of the upper airways.
3/7
Read 7 tweets
25 Nov
Meta-analyses and studies of large cohorts have shown that around 20–40% of individuals infected with SARS-CoV-2 have asymptomatic disease

1/
nature.com/articles/s4157…
The complexities of a working definition for the term ‘asymptomatic’ in this disease are exemplified by an early report from Wuhan, which showed that about one-third of individuals with asymptomatic infections had lung changes that were visible on computed tomography scans
2/
...subsequently confirmed in several other studies. That is, end organ damage can ensue in individuals who were otherwise unaware of their infection.
3/
Read 9 tweets
24 Nov
Warum sind unsere Impfquoten nicht ausreichend? Ich denke viele der Mythen, welche die Leute verunsichert haben, gehen auf den Flyer zurück, der Anfang 2021 in die Briefkästen geworfen wurde. Verantwortlich dafür sind @SHomburg und Sucharit Bhakdi
1/
Schon das Deckblatt nutzt den klassischen "ich stelle doch nur Fragen"-Trick.
Und die abgebildete Spritze, naja, die Größenrelation zu dem niedlichen Teddybär entspricht nicht direkt der Realität beim Impfen (man beachte auch: blutiges Pflaster, umgekippte Impfampulle)
2/
Los geht's mit dem Text:
Was unterschlagen wird:

Impfung: ist nur 1 Virusgen ("VirusgenE" ist also falsch)
Infektion: mindestens 10 verschiedene Virusgene
3/
Read 13 tweets
23 Nov
"Ireland is home to one of Europe's highest vaccination rates...three-quarters of all people, having been immunized -- but it recently imposed a midnight curfew ...as it battles a growing surge in cases and hospitalizations"
1/9

edition.cnn.com/2021/11/19/eur…
"...even small pockets of unvaccinated people can drive transmission...Ireland...around a million are still not protected.
"...we have...an epidemic of the unvaccinated -- about 10% of our population over 12 is unvaccinated, and we're seeing an epidemic in those people..."
2/9
"...elderly and vulnerable people with co-morbidities can still suffer breakthrough cases, and asymptomatic, healthy people are catching and passing on the virus.
"The combination of those four or five things has meant that our hospitals are getting quite full""
3/9
Read 9 tweets
21 Nov
Was haben denn Impfungen je für uns getan? Unglaublich viel!

Leider verschwinden die Erfolge dieser erfolgreichsten aller medizinischen Maßnahmen nur allzu schnell aus dem kollektiven Bewusstsein, und man nimmt die Abwesenheit fieser Keime als gegeben an

1/n
Wichtiges Beispiel: Pocken, eine sprichwörtliche Geisel der Menschheit.

Hier eine Beschreibung des Todes von Ludwig XV, der sich bei einem Schäferstündchen das Virus eingefangen hatte. 10 Tage später das da:

2/n
Dies und vieles was folgt sind aus:
(Sehr empfehlenswertes Buch, ca.1200 spannende Seiten plus weitere 500 Seiten Referenzen. Ich gebe 10 von 5 Sternen)

3/n

penguinrandomhouse.de/Buch/Die-Gesch…
Read 19 tweets
10 Nov
I have a totally unproven hypothesis why the australian society did not discuss much before they imposed fast and robust public health measures against SARS-CoV-2: They already had quite some bad experiences with invasive species

(Thread ends with a kid's TV series!)

1/11
Cane toads: introduced into Australia with the aim to control beetles that were destroying the sugar cane harvest (didn't work)

2/11
nma.gov.au/defining-momen….
Cane toads (dt.: Aga Kröte) soon became a problem themselves. They are prolific eaters (not only sugar cane beetles) and their skin secretes a toxin. Not good for the local ecosystems

3/11
Read 11 tweets

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