The plague virus does not exist. Plague is a bacterial infection caused by the bacteria Yersinia pestis.
Lab Tests Used to Detect Yersinia pestis
Direct Detection
- Culture: The gold standard; growing the bacteria from a sample.
- PCR (Polymerase Chain Reaction): Detects specific DNA sequences.
- Immunofluorescence: Uses fluorescent antibodies to bind to antigens.
Indirect Detection
- Serology: Tests for antibodies in the blood.
- Blood culture: Detects bacteria in the bloodstream.
Sample Types
- Bubonic plague: Sputum, pus from buboes, blood, or tissue.
- Pneumonic plague: Sputum, blood.
- Septicemic plague: Blood.
Important notes: Samples must be obtained under safety measures. Tests should be interpreted with clinical signs. Only healthcare professionals should perform and interpret these tests. Seek immediate medical attention if plague is suspected.