Israeli airstrikes killed at least 37 people in Gaza Tuesday, local medics said and fighting ramped up, as the Israeli military said it had been targeting command centres used by Palestinian resistance movement Hamas.Palestinian health officials said at least 13 people, including women and children, were killed in two Israeli strikes on two houses in Nuseirat, one of the enclave's eight historic refugee camps.Another strike on a school sheltering displaced Palestinian families in the Tuffah neighbourhood of Gaza City killed at least seven people, medics added.Later Tuesday, two separate Israeli attacks killed five Palestinians in Rafah in the southern Gaza Strip and in the Zeitoun suburb of Gaza City, medics said.In Khan Younis, in the south of the enclave, six Palestinians were killed in an Israeli air strike on a tent housing displaced people, medics said.Hours later, an Israeli airstrike on a car in western Khan Younis, killed six Palestinians, medics said.Israel's war on Gaza has devastated Gaza, displacing most of its 2.3mn population.The health ministry in Hamas-run Gaza said that at least 41,638 people have been killed in the war, now in its 12th month. It said 96,460 people have been wounded in the Gaza Strip since the war began on October 7.Some Palestinians said they feared that Israel's shift in focus to Lebanon could prolong the conflict in Gaza, which marks its first anniversary next week.’The eyes of the world now are on Lebanon while the occupation continues its killing in Gaza. We are afraid the war is going to go on for more months at least,’ said Samir Mohammed, 46, a father of five from Gaza City.