Citing security concerns, Israel and Egypt maintain tight restrictions along the frontier with Gaza, where two million people live under the rule of the Islamist Hamas group.
Tariq Zaanin, 35, from the Gaza town of Beit Hanoun, said Gazans had thought their hated isolation from the outside world would at least keep them safe from the global pandemic.
"Today it has spread in your neighbourhood, hitting friends and relatives. So people are now more cautious because they are afraid for themselves and for those they care about," he said.
Zaanin, a hairdresser, got married on Sept. 22 but social distancing meant cancelling a large wedding dinner.
"Some may say it saved us money, but it took away our joy," he said.
International health officials caution that a wider Covid-19 outbreak in Gaza would be disastrous, given its under-developed health system and a chronic shortage of medical supplies.
Gaza's security forces enforce a ban on beach-going, a popular activity in the enclave, where frequent power cuts make cooling off that much harder.
Police man checkpoints, inspecting vehicles to ensure drivers and passengers wear masks.
Eyad Al-Bozom, a Gaza interior ministry spokesman, said people who violate health regulations or the curfew can be fined or detained.