Periphery to centre quality control of sputum smear microscopy and 'rapid fading' of Ziehl-Neelsen staining

MeSH terms

• Africa, Central
• Confounding Factors, Epidemiologic
• False Positive Reactions
• Guidelines as Topic
• Humans
• Humidity
• Microscopy / methods*
• Mycobacterium tuberculosis / isolation & purification*
• Quality Control
• Rosaniline Dyes / standards*
• South America
• Sputum / microbiology*
• Time Factors
• Tropical Climate
• Xylenes