Taplin D, Lansdell L
Appl Microbiol. 1973 Jan;25(1):135-8. doi: 10.1128/am.25.1.135-138.1973.
Streptococcal surveys in foreign countries or remote areas may be greatly enhanced by the use of calcium alginate swabs desiccated in sterile silica gel. Delays of up to 4 weeks before return to a base laboratory are feasible, and the need for fresh media or laboratory facilities in the field may be eliminated. Comparison of direct plating on crystal violet blood agar versus delayed silica gel preservation during surveys in Uganda, Haiti, Colombia, and Miami, Fla., showed no significant loss of positive cultures from skin lesions and suggests that desiccated swabs increase the recovery of bacitracin-sensitive Streptococcus pyogenes (presumptive group A) from throats.
在国外或偏远地区进行链球菌调查时,使用在无菌硅胶中干燥的藻酸钙拭子可大大提高调查效率。在返回基础实验室之前延迟长达4周都是可行的,并且可以消除在现场对新鲜培养基或实验室设施的需求。在乌干达、海地、哥伦比亚和佛罗里达州迈阿密进行的调查中,对在结晶紫血琼脂上直接接种与延迟硅胶保存进行比较,结果显示皮肤损伤的阳性培养物没有显著损失,这表明干燥拭子可提高从喉咙中分离出对杆菌肽敏感的化脓性链球菌(推测为A组)的回收率。