Research unit of @OlivierSchwartz @Institutpasteur. We study the pathology of SARS-CoV-2 & HIV and the mechanisms of cell fusion. Tweets by lab members.
A new scanning electron microscopy image of human bronchial cells infected by #SARSCoV2. Cells are pseudocolored in green and virus in yellow. Image by Rémy Robinot, Mathieu Hubert, Vincent Michel, @OlivierSchwartz & @Team_Chakra. Colourized by JM Panaud. (c) @institutpasteur
Take a look at our recent work on the seasonal coronavirus HKU1. We developed the first cell line–based system to propagate the virus and explore its biology. HKU1 grows much better at 33°C, the temperature of the nasal cavity, than at 37°C
https://t.co/p1g1D1nOp8
Interesting SarsCoV2 variant report update by @CorneliusRoemer ( May 21st ,2025)
🔥Your attention for XFG and NB.1.8.1, a double variant worldwide NH summer/SH winter surge?
1. Global overview:
Based on sequences collected in 2025 and shared until 2025-05-18,
- XEC continues declining and is no longer dominant in almost all countries, except for Japan where it is still dominant and growing.
- LP.8.1 is dominant in North America, parts of South America (Brazil), much of Europe and South Africa (the only continental African country with more than 10 sequences from 2025). It is still growing in Australia.
- LF.7 appears to have peaked. In Russia and Peru it was was dominant in Q1 2025 and at around 40% in Singapore and Chile.
- NB.1.8.1 is growing globally. It is dominant in Hong Kong and China and at 5-30% in most other countries with sequences collected end of April 2025.
- XFG (described below) is most common in North America and Europe where it is growing around as fast as NB.1.8.1 and at similar frequencies.
2. Comparison of XFG and NB.1.8.1 with interesting global insights!👇
https://t.co/XhDqSgOrHI
🦠 Le nouveau variant #Omicron NB.1.8.1 a été détecté en France, dans un contexte de reprise épidémique.
"Mais personne n’est capable de dire si c’est lui ou un autre qui s’imposera lors de la prochaine vague". #Covid19
A dérouler ⤵️ @le_Parisien
1/7
https://t.co/lIR8Td94zN
Je viens de faire mon #eXit! L’exode de X est massif. Ne perdez pas un seul de vos abonnés. Grâce à #OpenPortability j’ai inscrit 4036 nouveaux passagers pour partir vers #BlueSky & #Mastodon. Retrouvez automatiquement vos communautés le #20Janvier via https://t.co/jRB7uqWWYB !
HIV-1 budding requires cortical actin disassembly by the oxidoreductase MICAL1
Congrats to @TMDCLab_Pasteur revealing an unexpected connection between oxidoreduction and viral budding.
PNAS https://t.co/PEnROoAHHR
🤖🔬Comment l’IA révolutionne le quotidien des chercheurs ? À l’Institut Pasteur, l'IA et la microscopie en holotomographie permettent de suivre les réactions cellulaires aux infections virales comme le #SARSCoV2. Une avancée majeure expliquée par Olivier Schwartz @Virus_Immunity