In a survey during the growing seasons of 2011–2014, different viral symptoms were observed in grapevines, suggesting the presence of virus and virus-like diseases. A total of 1115 samples including 720 table and 395 wine grapes were collected from five Moroccan regions and tested by ELISA for the presence of ten different viruses. Moreover, 81 samples including some that were positive, negative and inconclusive in ELISA were confirmed in reverse transcription PCR. Among the tested grapevines, both wine (63.4%) and table grapes (60.3%) were readily infected whereas autochthonous table grapevine cultivars were less infected (31.1%). This survey revealed a high virus incidence but also the existence of healthy selection of all cultivars screened.

在期间的2011-2014的生长季节的调查，在葡萄藤中观察到不同的病毒的症状，这表明病毒和病毒的存在-等疾病。从五个摩洛哥地区收集了总共1115个样品，包括720桌葡萄和395酿酒葡萄，并通过ELISA检测了十种不同病毒的存在。此外，在逆转录PCR中确认了81个样品，包括在ELISA中呈阳性，阴性和不确定的一些样品。在测试的葡萄中，葡萄酒（63.4％）和鲜食葡萄（60.3％）都容易感染，而自发鲜食葡萄品种的感染率较低（31.1％）。这项调查显示，病毒的发病率很高，但所有筛选出的品种都存在健康的选择。