<span style="color: #222222;">Aid agencies have issued an urgent call for a ceasefire in Yemen to allow vital cholera vaccinations to take place, a day after Houthi rebels said, air attacks by a Saudi and UAE-led coalition killed dozens of people in the port city of Hodeidah. </span><br />'' <br />'' <span style="color: #222222;">According to Peter Salama, a senior official at the World Health Organization (WHO), about 3,000 health workers need three days of tranquility in order to deliver more than half a million vaccines to the north of the war-torn country. </span><br />'' <br />'' <span style="color: #222222;">Almost 3,000 suspected cholera cases were reported in the first week of July across the country, the highest number since the start of 2018.</span><br />'' <br />'' <span style="color: #222222;">Without vaccinations, the conditions throughout the hot summer months could lead to the disease spreading like wildfire and overwhelming an already-crippled health system. More than 22 million people in Yemen are in need of humanitarian aid, making it the world's worst ongoing humanitarian crisis.</span><br />'' <br />'' <span style="color: #222222;">The WHO's warning came after the United Nations' special envoy for Yemen said, he plans to invite the country's warring factions to hold talks in the Swiss city of Geneva, in September.</span><br />'' <span style="color: #222222;">Today, a representative for the Houthi rebels said, the group is willing to attend UN-brokered talks and did not expect a breakthrough.</span><br />