The rules for returning to Italy from Kenya have changed.
As of today, the Italian government requires anyone returning or arriving from one of the international countries in band E, such as sub-Saharan Africa with the exception of Rwanda, to have a negative molecular or antigenic test result within 48 hours of entry into Italy,
Until tomorrow, Wednesday 21 April, only for these travellers, it will be possible to carry out the molecular or antigenic test by swab on arrival at the airport, where possible, or within forty-eight (48) hours at the competent Local Health Authority.  
On the other hand, quarantine is reduced from 14 to 10 days for those who come from or have stayed/transited in one or more States or territories included in Lists D and E during the previous fourteen (14) days. This provision applies only to entries into Italy after the entry into force of the Ordinance of 16 April 2021. Those who entered Italy before 18 April 2021 must complete the fourteen-day isolation period.  
In addition, there will be a requirement for a further molecular or antigenic test conducted by means of a swab, at the end of the ten (10) day period, and a requirement to complete a digital tracking form, in accordance with the procedures that will be subsequently indicated by the Ministry of Health. The digital form replaces the paper self-declaration previously in use. The paper version may only be submitted if it has not been possible, due to technical impediments, to complete the digital form. Until the ways and terms for completing the digital form are communicated, the paper version of the self-declaration may continue to be used.