Ronnie Wood's pregnant wife has returned home from the Rolling Stones tour due to fears she could contract the Zika virus. The 68-year-old rocker took to Twitter to tell concerned fans that Sally Humphreys is back in London because they were worried she might get infected by the disease - which is transmitted by mosquitoes and similar to the deadly dengue fever - in Brazil which could've affected their unborn twins. Ronnie tweeted: "My wife @sallywood has not been 'sent home' from the @rollingstones tour! 1/3 "Our twins come first and we decided the Zika virus & excessive flying was too dangerous for them. 2/3 (sic)" The guitarist also posted a naked picture of his pregnant 38-year-old wife and an image of a drawing he did of his significant other with their twins, with the words "my little stars" written on the artwork. He added the caption: "Our baby GIRLS are growing beautifully thank you for the love! 3/3 (my drawing)" The Stones have been staying in the luxury Copacabana Palace hotel in Rio de Janeiro, Brazil, for their 'América Latina Olé Tour', and performed in the South American city on Saturday (20.02.16). The rockers have three further gigs in Brazil before moving onto Peru, Colombia and finally Mexico, where the 13-date tour will come to an end on March 17. Ronnie and Sally's twins will be their first children together. He has four kids from previous relationships.