Fig. 1From: Streptococcus pneumoniae and Haemophilus species colonization in health care workers: the launch of invasive infections?Representative panels showing identification techniques for the organisms. a Chocolate agar inoculated with the throat swab specimen showing Pinpoint, shiny colonies surrounding bacitracin disc (10 units) suggestive of Haemophilus spp. b, c Satellitism demonstrated in blood agar (H. influenzae) and nutrient agar (Haemophilus spp.) respectively. d Optochin sensitivity for S. pneumoniae Back to article page