根據(jù)一項(xiàng)最新研究報(bào)道，在美國(guó)一家大型教學(xué)醫(yī)院中有超過(guò)50％的計(jì)算機(jī)鍵盤(pán)隱藏潛在的致病細(xì)菌。

使用標(biāo)準(zhǔn)檢測(cè)方法對(duì)來(lái)自不同醫(yī)院區(qū)域的25個(gè)計(jì)算機(jī)鍵盤(pán)進(jìn)行了致病微生物污染的檢測(cè)。在所有鍵盤(pán)中都發(fā)現(xiàn)了最常見(jiàn)的致病菌凝固酶陰性葡萄球菌。80％的鍵盤(pán)帶有類(lèi)白喉菌，72%帶有微球菌屬，64%帶有芽胞桿菌屬，36%帶有非發(fā)酵的革蘭氏陰性桿菌，12%帶有萬(wàn)古霉素敏感腸球菌，4%帶有金黃色葡萄球菌，4%帶有甲苯異惡唑青霉素易感鏈球菌。

除此之外，研究人員還檢測(cè)了不同消毒劑的效能、以及對(duì)鍵盤(pán)的裝飾和功能。6種不同的消毒劑被檢測(cè)了對(duì)隱藏在鍵盤(pán)中的甲苯異惡唑青霉素抵抗的鏈球菌、假假單胞菌、萬(wàn)古霉素敏感腸球菌的作用。所有被檢測(cè)的消毒劑在清除和滅活微生物方面都十分有效。即使在300個(gè)消毒循環(huán)之后，沒(méi)有證據(jù)顯示消毒劑對(duì)鍵盤(pán)的使用壽命和功能產(chǎn)生影響。該研究結(jié)果發(fā)表在2006年5月《感染控制和醫(yī)院流行病學(xué)》。

Hospital Keyboards May Harbor Bacteria
 
A new study reports that potentially pathogenic bacteria were found on more than 50% of computer keyboards tested at a major U.S. teaching hospital.

Twenty-five computer keyboards from various hospital areas were tested for microbial contamination using standard measures. The most common potential pathogen, coagulase-negative staphylococci, were found on all of the keyboards. Diphtheroids were found on 80% of keyboards, Micrococcus species on 72%, Bacillus species on 64%, nonfermentative Gram-negative rods on 36%, vancomycin-sensitive Enterococcus on 12%, Staphylococcus aureus (ORSA) on 4%, and oxacillin-susceptible S aureus on 4%.

In addition, the researchers determined the efficacy of various disinfectants and their cosmetic and functional effects on the keyboards. Six different disinfectants were tested against oxacillin-resistant ORSA, Pseudomonas aeruginosa, and vancomycin-resistant Enterococcus species that were inoculated onto study keyboards. All of the disinfectants tested were highly effective in removing or inactivating the test microbes. Even after 300 disinfection cycles, there was no evidence that the disinfectants were having a significant impact on keyboard finish or function. The study was published in the April 2006 issue of Infection Control and Hospital Epidemiology.