Australian antigen

Covid rapid antigen tests on a table as a health worker administers them in Melbourne. Australia’s pathology industry – a huge financial beneficiary of PCR testing – has lobbied hard against the use of the tests. Photograph: James Ross/AAP Covid rapid antigen tests on a table as a health worker administers them in Melbourne. Australia’s pathology industry – a huge financial beneficiary of PCR testing – has lobbied hard against the use of the tests. Photograph: James Ross/AAP In the past few weeks, Allison Rossiter, the managing director of Roche Diagnostics, one of the first companies to have an approved rapid antigen test in Australia, has witnessed a flurry of interest from state governments. South Australia, which until a week ago had banned the use of the tests, is among their new clients. So too is Read more It hasn’t always been this way. Interviews with manufacturers and suppliers of rapid antigen testing reveal a frustration at the amount of resistance to their products in Australia until very recently. “The response from government has generally been ‘yeah we’ll look at it’ or ‘maybe in the new year’, but until now there hasn’t been any critical impetus,” Dean Whiting, the chief executive of Pathology Technology Australia, a group representing rapid antigen testing suppliers, told Guardian Australia. “There has been some confused market messaging at times and I think there is a level of frustration.” Since the beginning of the pandemic, Australia has bet heavily o...

Some Australian states and territories have loosened Covid border restrictions and travellers may now only need a negative rapid antigen test and be fully vaccinated for entry. Photograph: Bianca de Marchi/AAP Some Australian states and territories have loosened Covid border restrictions and travellers may now only need a negative rapid antigen test and be fully vaccinated for entry. Photograph: Bianca de Marchi/AAP As the Omicron variant causes Covid case numbers to surge across Australia, state governments have made a number of changes to While many states relaxed their border restrictions after achieving high levels of vaccination, some have reintroduced certain rules in the wake of the Omicron outbreak and the rapid rise in case numbers. Others have announced domestic travellers will be allowed to use rapid antigen test results before travelling instead of strictly requiring PCR tests. The changes have come as testing sites have been overwhelmed, with drive-in queues stretching around blocks and wait times ballooning across much of the country. Here’s a rundown of each state’s current domestic travel requirements. Victoria Domestic travellers to New South Wales Interstate travellers entering NSW Read more Unvaccinated close contacts may not enter NSW; if they are identified as a close contact and have already travelled to NSW, they will need to complete 14 days of self-isolation. Fully vaccinated visitors who have been identified as close contacts interstate in the 14 ...

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An antigen is a piece of a virus that can be found in the blood and often causes the immune system to respond to an infection. The Australia antigen is a specific antigen used to diagnose patients with the hepatitis B virus. It got its name because it was first found in an Australian aborigine, but now we know it appears in anyone with hepatitis B. To understand this antigen's role, it's useful to first know more about hepatitis B. Hepatitis B can be characterized as acute or chronic. Acute hepatitis B occurs shortly after infection and can often be cured during this period. Conversely, chronic hepatitis B is an infection that lasts longer than six months. At this point, it is unlikely the patient will ever be completely cured. The good news is that it's relatively rare for adults to develop chronic hepatitis B, though it is more common in children. Not all people with the Australia antigen develop symptoms of hepatitis B. However, if symptoms of hepatitis B occur, they most often include a loss of appetite, fatigue, nausea and vomiting, localized pain in the mid-section near the liver, itching, jaundice, dehydration, and discolored urine and fecal matter. If the Australia antigen appears in blood analysis, it may be a signal that the virus is actively reproducing in the body. This is an area of active ongoing research. Cases of chronic hepatitis B that cause symptoms indicate the liver is infected and no longer functioning properly. This can cause the body to retain fluid...