There is no "decisive new information" regarding Michael Schumacher's health as doctors continue to try and wake him from his coma.

Schumacher has been in a coma for over six weeks since suffering a head injury in a skiing accident in late December, with doctors confirming two weeks ago that they were starting the waking up process "which may take a long time". No further information since then has led to speculation about Schumacher's condition, but a fresh statement from his manager Sabine Kehm says there has been no major change as the waking process continues.

"Michael's family would like to again express their sincere thanks for the continuous sympathy coming from all over the world," the statement read. "The good wishes they receive help the family and, we are convinced they also help Michael, who still is in a waking up process.

"As often in such situation no day is like the next. The family is thankful for one's understanding that they would not wish to disclose medical details in order to protect Michael's privacy. As assured from the beginning we will continue to communicate any decisive new information on Michael's health state. We are aware that the wake up phase can take a long time.

"The family continues to strongly believe in Michael's recovery and place all their trust in the doctors', nurses' and nursing auxiliaries' team. The important thing is not the speed of the recovery but that Michael's healing process progresses in a continuous and controlled way."