Filarial Worms

• Sheathed with 2 nuclei in the tip of the tail:

  B. malayi
• B. malayi PERIODICITY:


  NOCTURNAL
• B. malayi USES WHAT TECHNIQUE:

  Giemsa-stained blood;

  Knott's technique
• Sheathed; no nuclei on the tip of the tail:

  W. bancrofti
• W. bancrofti PERIODICITY:

  NOCTURNAL
• W. bancrofti USES WHAT TECHNIQUE:

  Giemsa-stained blood;

  Knott's technique
• Sheathed; continuous pairs of nuclei up to the tip of the tail:

  Loa loa
• Loa loa periodicity:

  Diurnal
• Loa loa technique:


  Giemsa-stained blood;

  Knott's technique
• Not sheathed; no nuclei in the tip of the tail:

  O. volvulus
• O. volvulus periodicity:


  none
• O. volvulus technique: 


  Giemsa-stained skin snips
• causes occulocutaneous infection in both adult and larvae:

  O. volvulus
• continuous row of nuclei, not sheathed:

  Mansonella perstans