A wave of flu infections in Germany has continued to grow and now affects all age groups, according to a weekly update from Germany’s public health authority. Previously, it had primarily been schoolchildren and young adults who had contracted the flu, according to the Robert Koch Institute (RKI). In total, more than 30,000 laboratory-confirmed cases of flu have been reported to the RKI in Germany since the start of the flu season. The number of reported infections are currently rising from week to week, according to the RKI, although public health officials assume that a large proportion of f…