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☆ Bird flu virus isolated from hospitalized Canadian teen shows signs of human adaptation
▼ + stars: | 2024-11-21 | by ( Brenda Goodman | ) edition.cnn.com time to read: +6 min

CNN —The avian flu virus isolated from a hospitalized teenager in Vancouver has mutations in key areas that could help the virus spread more easily in humans, scientists say. But scientists say the genetic changes are a reminder of what the virus is capable of if it continues to spread. The H5N1 bird flu virus that infected the teen, who is in critical but stable condition, is not the same strain that is transmitting in dairy cattle in the United States. The three mutations are at positions in the virus’ genome that Bloom and other scientists have determined would allow it to attach more easily to human cells. Most of the human H5N1 infections reported in the United States have had red, inflamed eyes as an early symptom, suggesting that’s where the virus entered the body.

Persons: ” Dr, Bonnie Henry, we’ve, ”, Jesse Bloom, “ It’s, Scott Hensley, immunologist, Hensley, Bloom, Dr, Sanjay Gupta, ” Bloom Organizations: CNN, Fred Hutchinson Cancer Center, University of Pennsylvania, CNN Health Locations: Vancouver, British Columbia, United States, Pacific Northwest, ARDS, Canadian, Washington

☆ New analysis reveals dynamic volcanism on Venus
▼ + stars: | 2023-03-15 | by ( Will Dunham | ) www.reuters.com time to read: +4 min

A February 1991 image showed the vent as a circular formation covering about one square mile (2.6 square km). A October 1991 image showed the vent with an irregular shape covering about 1.5 square miles (3.9 square km). Another study published in 2020 identified 37 volcanic structures apparently active in the past 2 million to 3 million years. Venus, with a diameter of about 7,500 miles (12,000 km), is slightly smaller than Earth. Its thick atmosphere - mainly carbon dioxide - traps in heat in a runaway greenhouse effect, rendering Venus the solar system's hottest planet.

☆ Flu hospitalizations increase nearly 30% as U.S. enters holiday season
▼ + stars: | 2022-11-28 | by ( Spencer Kimball | ) www.cnbc.com time to read: +1 min

Flu has hit unusually hard and early this season, putting pressure on emergency departments across the nation. Flu activity normally picks up after Thanksgiving, but hospitalizations were already at a decade high in early November. Scientists and public health experts are worried flu hospitalizations will surge even more after millions traveled to see family and friends for Thanksgiving. About 11 people out of every 100,000 have been hospitalized with the flu since early October, the highest level in a decade. "The fact that we're already at this high level going into the holiday season makes me nervous," said Scott Hensley, a microbiologist and flu expert at the Penn Institute for Immunology.

☆ Researchers test mRNA technology for universal flu vaccine
▼ + stars: | 2022-11-24 | by ( Nancy Lapid | ) www.reuters.com time to read: +3 min

It delivers tiny lipid particles containing mRNA instructions for cells to create replicas of so-called hemagglutinin proteins that appear on influenza virus surfaces. A universal vaccine would not mean an end to flu seasons, but would replace the guess work that goes into developing annual shots months ahead of flu season each year. Moderna and Pfizer both have mRNA flu vaccines in late-stage human trials, and GSK (GSK.L) and partner CureVac (5CV.DE) are testing an mRNA flu vaccine in an early-stage safety trial in humans. These vaccines are designed to defend against only four recently-circulating influenza strains but could theoretically be changed up each year. The universal flu vaccine, if successful in human trials, would not necessarily prevent infection.

☆ Studii: Imunitatea în fața COVID poate persista mai mulți ani: Cel mai bine stau cei care au făcut și boala, și vaccinul
▼ + stars: | 2021-05-27 | by ( ) www.jurnal.md time to read: +8 min

Sursa foto: Jurnal.mdStudii: Imunitatea în fața COVID poate persista mai mulți ani: Cel mai bine stau cei care au făcut și boala, și vaccinulCelulele imunitare supraviețuiesc pe termen îndelungat în măduva osoasă a oamenilor care au fost infectați cu SARS-CoV-2 sau vaccinați împotriva COVID, arată studiile citate de New York Times. Cele două studii citate de prestigioasa publicație sugerează că oamenii care au fost bolnavi, s-au vindecat de COVID și apoi s-au vaccinat, nu vor mai avea nevoie de rapeluri suplimentare în anii următori. La fel, o minoritate a persoanelor care s-au infectat, dar care din cauza unor probleme imunitare nu au generat suficienți anticorpi – și în acest caz se impune vaccinarea suplimentară. Oamenii care au fost infectați și vaccinați au un răspuns formidabil, un set de anticorpi formidabili, care mă aștept să dureze multă vreme. În momentul în care se întâlnesc cu virusul, celulele B proliferează și produc anticorpi în cantități mari.

Persons: Scott Hensley, Michel Nussenzweig, Ali, Louis, Ellebedy, Jennifer Gommerman, Nussenzweig Organizations: New, New York Times, Nature, Universitatea din, Universitatea Rockefeller, Universitatea Eashington Locations: New York, New, Universitatea din Pennsylvania, St, Universitatea din Toronto, Africa de Sud

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