Plant symptoms and virus test results

[euplusia]

Actually I tested some of my plants with the agdia immunostrip test for Cymbidium Mosaic Virus ( CymMV ) and Odontoglossum Ringspot Virus ( ORSV, also called Tobacco Mosaic Virus -orchid strain). I will report the symptoms and results as visual aids.
C. Elizabeth Mahon : Hesitant growth, prone to black rot. Necrotic spots and streaks on bulbs and leafs. White flowers without visible symptoms. Tested positive for CymMV.
Jewel Box: Good grower, flowering several times a year. Leaves and bulbs inconspicuous. Flowers at times with missing sepals or petals, but no deformity or colour break. Tested positive for CymMV.
C. Blue Bells: Old leaves with heavy necrotic spots, but not progressive. New leaves healthy, normal growth, inconspicuous flowers. Virus test negative.
Brassada: Miserable since 4 years, no increment, no flowers. Necrotic streaks and spots on bulbs and leaves. Tested positive for ORSV.
Laelia autumnalis: Inconspicuous leaves and growth. Only one out of several plants had a colour break on sepals in the last flowering season. This plant was tested positive for ORSV and negative for CymMV. This amazed me as the vast majority of symptomatic plants in the Cattleya alliance in my greenhouse was infected with CymMV.