Mr Johnson was last seen on Thursday night, as he clapped outside No 10 as part of a nationwide gesture to thank NHS staff.
Mr Johnson waxaa markii ugu dambeysay ee la arkay ay aheyd habeenimadii Khamiista, isagoo taagnaa banaanka Xafiiska No 10, taas oo qayb ka ah muujinta guud ee dalka oo dhan oo loogu mahadcelinayo shaqaalaha NHS.