At least 47 people have been killed and many others injured in Israeli overnight airstrikes on the centre of the Gaza Strip, the Palestinian news agency WAFA reported on Friday, citing medical sources. The strikes hit the Nuseirat refugee camp and the towns of Deir al-Balad and al-Zawaida. Residential areas were targeted, where displaced people were being housed, according to WAFA. Many of the dead were women and children, the agency reported. “Eyewitnesses reported that following the initial strikes, residents rushed to help those affected, only to be targeted again by subsequent bombings. Se…