It's been announced that Momoiro Clover Z's Ariyasu Momoka will be continuing treatment for her throat until the end of February.

Back in January, Ariyasu announced that she would be refraining from using her voice (both singing and talking) in order to rest her vocal cords. To take thorough measures, her treatment period will be extended until late-February.

While Ariyasu will make an appearance on February 11th's 'Nippon Housou Momoiro Clover Z Momoclo Club xoxo ~Valentine DE NIGHT Da~Z!' and February 16th's 'Dokusen! Momocuno 60-pun vol.6', the remaining four members will take turns singing her part. During talk segments, Ariyasu will communicate by writing.

Sources: natalie, Oricon
Thanks to eyeless for the tip!