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Missing immune cells may explain why COVID-19 vaccine protection quickly wanes
Missing immune cells may explain why COVID-19 vaccine protection quickly wanes

“Neither vaccinations nor immunity from infections seem to thwart SARS-CoV-2 for long. The frequency of new infections within a few months of a previous bout or a shot is one of COVID-19’s most vexing puzzles. Now, scientists have learned that a little-known type of immune cell in the bone marrow may play a major role in this failure.

The study, which appeared last month in Nature Medicine, found that people who received repeated doses of vaccine, and in some cases also became infected with SARS-CoV-2, largely failed to make special antibody-producing cells called long-lived plasma cells (LLPCs). “

Neither vaccinations nor immunity from infections seem to thwart SARS-CoV-2 for long. The frequency of new infections within a few months of a previous bout or a shot is one of COVID-19’s most vexing puzzles. Now, scientists have learned that a little-known type of immune cell in the bone marrow may play a major role in this failure. The study, which appeared last month in Nature Medicine, found that people who received repeated doses of vaccine, and in some cases also became infected with SARS-CoV-2, largely failed to make special antibody-producing cells called long-lived plasma cells (LLPCs).
·science.org·
Missing immune cells may explain why COVID-19 vaccine protection quickly wanes
Missing immune cells may explain why COVID-19 vaccine protection quickly wanes
Missing immune cells may explain why COVID-19 vaccine protection quickly wanes

“Neither (MRNA) vaccinations nor immunity from infections seem to thwart SARS-CoV-2 for long. The frequency of new infections within a few months of a previous bout or a shot is one of COVID-19’s most vexing puzzles. Now, scientists have learned that a little-known type of immune cell in the bone marrow may play a major role in this failure.

The study, which appeared last month in Nature Medicine, found that people who received repeated doses of vaccine, and in some cases also became infected with SARS-CoV-2, largely failed to make special antibody-producing cells called long-lived plasma cells (LLPCs).

All study participants had received between two to five doses of messenger RNA (mRNA) COVID-19 vaccines—which code for SARS-CoV-2’s spike—during the preceding 3 years.

Neither vaccinations nor immunity from infections seem to thwart SARS-CoV-2 for long. The frequency of new infections within a few months of a previous bout or a shot is one of COVID-19’s most vexing puzzles. Now, scientists have learned that a little-known type of immune cell in the bone marrow may play a major role in this failure. The study, which appeared last month in Nature Medicine, found that people who received repeated doses of vaccine, and in some cases also became infected with SARS-CoV-2, largely failed to make special antibody-producing cells called long-lived plasma cells (LLPCs).
·science.org·
Missing immune cells may explain why COVID-19 vaccine protection quickly wanes
Long lived antibodies can be made in the bone marrow, the holy grail of vaccination. This is what happens after different time intervals after flu, tetanus and mRNA Covid vaccines. The box in purple is SARS-CoV-2 in the bone marrow. At months 2.5 and 14 they are empty.🧵
Long lived antibodies can be made in the bone marrow, the holy grail of vaccination. This is what happens after different time intervals after flu, tetanus and mRNA Covid vaccines. The box in purple is SARS-CoV-2 in the bone marrow. At months 2.5 and 14 they are empty.🧵
“SARS-CoV-2-specific plasma cells are not durably established in the bone marrow long-lived compartment after mRNA vaccination”
·x.com·
Long lived antibodies can be made in the bone marrow, the holy grail of vaccination. This is what happens after different time intervals after flu, tetanus and mRNA Covid vaccines. The box in purple is SARS-CoV-2 in the bone marrow. At months 2.5 and 14 they are empty.🧵