Between August 2006 and February 2007 other measles outbreaks linked to the Lazio outbreak (D4) occurred in Sardinia (Italy) and Barcelona (Spain), both affecting mainly Roma/Sinti communities. In Sardinia, nine cases, all aged below 15 years and three of which laboratory confirmed, with genotype D4 isolated, were reported from a Roma/Sinti settlement in the town of Alghero, between 12 August and 3 September 2006 [19] . Four of the children had travelled to Rome from 3 to 14 August 2006, to attend a funeral. In the Barcelona region (Spain) an outbreak occurred from October 2006 to February 2007. The first case, a six-year-old girl of Eastern European origin had attended a family gathering in Italy with her mother where other guests may also have had measles. Genotype D4 was identified [20] confirming the link with the outbreak in Lazio (Figure 4) .