LONDON, Oct 25 (Reuters) - The World Health Organization has drawn up the first ever list of fungal pathogens posing the greatest threat to human health, warning that some strains are increasingly drug-resistant and becoming more widespread. The U.N. body, which has similar lists for viruses and bacteria, said fungal infections and their increasing resistance to treatment were a growing risk. However, a historic lack of focus on the danger meant there were huge gaps in knowledge, as well as a lack of surveillance, treatments and diagnostics. It was hard even to estimate the scale of the threat because of the lack of data, WHO said, calling for a major effort from governments and researchers to strengthen the response to the 19 fungi on the list. "Emerging from the shadows of the bacterial antimicrobial resistance pandemic, fungal infections are growing, and are ever more resistant to treatments, becoming a public health concern worldwide," said Dr Hanan Balkhy, WHO Assistant