Diseases such as leishmaniasis, tuberculosis, and measles have returned to northern Syria, The New Arab’s Arabic language sister site Al-Araby Al-Jadeed has reported, causing panic in camps. A high population density in opposition areas of Idlib and Aleppo has led to a decline in sanitary conditions, as Syrians living in overpopulated camps struggle to access clean water, soap, and health services. “After the outbreak of the Syrian revolution, the waves of displacement and the lack of attention to the environment and health awareness led insects [and disease] to spread,” Reham Weiss, the healt…