Chinese pharmaceutical company announced that it has produced a vaccine for the swine flu virus that is designed to begin working after one dose.
Clinical trials have produced "positive" results, said Sinovac, the latest company to announce progress in making a vaccine against the A(H1N1) virus ahead of an expected second wave as the northern hemisphere winter approaches.
"The analysis of the clinical trial results showed that the A(H1N1) vaccine developed by Sinovac induces good immunogenicity after one dose," it said in a statement.
"After receiving one shot of the vaccine, none of the volunteers participating in Sinovac's clinical trials exhibited any signs of severe adverse reactions," it said.
Any adverse reactions were "all mild and transient, with pain at the site of injection as the most common symptom," it added.
Sinovac chief Weidong Yin said the company plans to take the next steps in bringing the vaccine to market "as soon as possible," while fully ensuring "the safety and immunogenicity of the vaccine."
British pharmaceuticals group GlaxoSmithKline said last week that it had begun clinical trials in Germany of a vaccine to combat the swine flu pandemic, with results expected from next month.