On Monday, the Palestinian Authority in the occupied West Bank said that Israel was preventing the transfer of 2,000 COVID-19 vaccine doses to frontline medical workers in the Gaza Strip.
Under a severely tightened Israeli blockade since 2007, the Gaza Strip is one of the most densely populated places on the planet. The two million Palestinians living there have not yet received any vaccines.
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...As the occupying power, Israel is responsible for “public health and hygiene in the occupied territory,” as stated in article 56 of the Fourth Geneva Convention.
https://electronicintifada.net/blogs/maureen-clare-murphy/israel-uses-vaccines-bargaining-chips