More widespread use of antiretroviral drugs (ARVs) to treat HIV infection has led to drug resistance in low- and middle-income countries, but the level "is not steep enough to cause alarm, said a survey released by the World Health Organization on Wednesday," Agence France-Presse reports. "In low- and middle-income countries, drug resistance stood at 6.8 percent in 2010, the WHO said in its first-ever report on the matter," the news agency writes, adding, "High-income countries, many of which began widescale treatment for HIV years earlier and used single or dual therapies that can also encourage resistance, face higher rates of resistance, from eight to 14 percent, said the study" (Sheridan, 7/18).