From a USCIS E-Mail Announcement:
U.S. Citizenship and Immigration Services today announced it has temporarily closed its offices in Rome, Italy, and Nairobi, Kenya, to the public, due to the Coronavirus Disease 2019 (COVID-19) pandemic. In February, USCIS announced the temporarily suspension of services at its offices in Beijing and Guangzhou, China.
USCIS will post updates on the office pages when the offices are scheduled to reopen.
USCIS will reschedule all appointments and will continue to respond to email inquiries. Please visit the “Contact Us” sections on our Nairobi and Rome pages for information on how to send an inquiry via email. Please submit all inquiries in English.