The only seven day period with more than 10 reported injuries is the week between Christmas Day (December 25th) and New Years Day (January 1st). This might suggest there should be a Christmas break. The volume of games probably contributes to the increase in injuries.
The chart below also seems to suggest that there are slightly less injuries between January and April compared to between September and December. June is the month with the lowest activity (training or games) and has the lowest reports number of injuries.