By Manojna Maddipatla and Emma Farge GENEVA (Reuters) -Discarded syringes, used test kits and old vaccine bottles from the COVID-19 pandemic have piled up to create tens of thousands of tonnes of medical waste, threatening human health and the environment, a World Health Organization report said on Tuesday. The material potentially exposes health workers to burns, needle-stick injuries and disease-causing germs, the report said. “We found that COVID-19 has increased healthcare waste loads in facilities to up to 10 times,” Maggie Montgomery, a WHO technical officer, told Geneva-based journalist…