Seven new blood clot cases after AstraZeneca vaccine: TGA | Ralph Lauren

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There have been seven new blood clot cases following the AstraZeneca vaccine, Australia’s medicines watchdog has revealed.

The new cases of thrombosis with thrombocytopenia syndrome (TTS) were revealed in the Therapeutic Goods Administration’s COVID-19 vaccine weekly safety report on Thursday.

The TGA defines TTS as “a very rare event” involving “serious blood clots” with a low blood platelet count – less cells which fight against clots.

Three cases were on May 13 confirmed as TTS, while four were deemed “probable”.

The three confirmed cases included a 75-year-old man from Victoria, a 75-year-old man from Western Australia and a 59-year-old Queensland man who was diagnosed in Victoria.

“Of these, only the Victorian man remains in hospital, but is responding to treatment and is in a stable condition,” a TGA statement read.

“The other two patients are not currently in hospital and are thought to be well.

“Four other newly reported cases are considered to be probable TTS. This includes three men from Victoria aged 65, 70 and 81 years, and a 70-year-old man from NSW.”

The TGA maintains that reporting rates of blood clotting in Australia were “consistent with what is being seen internationally”.

But it believed a “higher proportion of less severe cases may be being reported in Australia”.

“This may be due to high levels of awareness in the community and among the medical profession around TTS along with less strain on the healthcare system around COVID infections with much lower infection rates than internationally,” it said.

Camera IconThe new blood clot cases were revealed in the TGA’s COVID-19 vaccine weekly safety report. NCA NewsWire/Bianca De Marchi Credit: News Corp Australia

All but one of the newly reported cases was vaccinated after the April 8 recommendation by the Australian Technical Advisory Group on Immunisation (ATAGI) that the Pfizer jab was preferred over the AstraZeneca vaccine in adults aged under 50 years.

The developments take the total Australian reports of cases assessed as TTS following the AstraZeneca vaccine to 18.

About 1.8 million doses of the AstraZeneca vaccine have been administered so far.

Camera IconAbout 1.8 million doses of the AstraZeneca vaccine have been administered so far. NCA NewsWire/Bianca De Marchi Credit: News Corp Australia

The TGA noted that all of the other 11 cases, which were revealed in earlier safety reports, were recovering and stable, except one of the cases which resulted in the death of a 48-year-old woman from the NSW Central Coast.

Also in the TGA safety report, it was revealed the most common reactions reported following the AstraZeneca vaccine this week were headache, muscle pain, fever, chills and nausea.

The most common reactions reported for the Pfizer COVID-19 vaccine this week were headache, lethargy, muscle pain, injection site reactions and fever.

“Most people in clinical trials of the AstraZeneca and Pfizer Comirnaty COVID-19 vaccines experienced one or more of these side effects,” the report said.

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