An Australian multi-centre, randomised controlled clinical trial of the Bacille Calmette-Guerin (BCG) vaccine has been endorsed by the Director-General of the World Health Organization (WHO), Dr Tedros Adhanom Ghebreyesus. 28. The vaccine that is currently available in Australia is not registered by the Therapeutic Goods Administration. Sanofi-Aventis Australia markets the BCG vaccine currently BCG vaccine is a suspension of a live attenuated strain of Mycobacterium bovis. It is more effective in children < 6yrs old, providing 50 to 80 % protection against meningeal and miliary TB. People can have the BCG vaccine more than once in their life without risk. BCG vaccination reduces the risk of tuberculosis in people who are not already infected with TB. 27 MARCH 2020 . Doing so would boost the immune system further. The vaccine does not always prevent disease. BCG (bacille Calmette–Guérin) live vaccine. Injectable live vaccines include measles, mumps, rubella, varicella, zoster and yellow fever vaccines. Reconstituted vaccine contains: 8–32 x 10 6 colony forming units per mL of an attenuated strain of Mycobacterium bovis; 1.5% w/v monosodium glutamate; May contain traces of polysorbate 80. Doctors in the UK have launched a clinical trial to see whether the cheap and widely available BCG vaccine can boost the immune system enough to prevent healthcare workers from catching coronavirus. Most Australian children do not require BCG vaccination as the rates of TB in Australia are very low. Australia's Trialing a TB Vaccine Against COVID-19, And Health Workers Get It First . Australian researchers are fast-tracking large-scale human testing to see if a vaccine used for decades to prevent tuberculosis can protect health workers from COVID-19, they announced Friday. 1.5 mg lyophilised powder in a multidose vial with separate diluent. The vaccine does not always prevent disease. AFP . BCG is a live vaccine and must be given on either the same day or 4 weeks before or after other injectable live vaccines. Worldwide, many BCG vaccines are available, but they are all derived from the strain propagated by the Institut Pasteur, which was first tested in humans in 1921.