On lavender
Eating dill in the garden
This organism is Streptococcus pneumoniae. Microscopy shows elongated gram-positive diplococci (pairs of purple ovals stuck together). Petri dish shows alpha haemolysis (green discoloration) and sensitivity to the antibiotic Optochin.
Colonies of M. tuberculosis (10×) isolated (on Middlebrook/7H11 agar) from a sputum sample of a TB positive patient. Note the characteristic cording/coiling morphology of the colonies.
The sample was confirmed positive by PCR (GeneXpert) and acid fast staining (auramine O).
Location and patient demographic s obscured for confidentiality reasons.