Back in June, Princess Ariane of the Netherlands was hospitalized several days at the Leiden University Medical Center contending with a serious viral infection. The episode caused quite an alarm with her parents; therefore when the little princess appeared unwell while the family vacationed in Argentina over the Christmas holiday, Prince Willem-Alexander and Princess Máxima took Ariane to a hospital as a precautionary measure. Their fears were allayed when the phyisicians verified that Ariane suffered from a common illness.