沙眼及包涵体性结膜炎病毒与鹦鹉热淋巴肉芽肿一族病毒有很多相似之处,如大小、形态、发育及化学特性等,它们并且有共同的族抗原。以补体结合试验不能把它们加以鉴别。Jenkin 首先发现脑膜肺炎病毒的细胞壁上具有种的特异性抗原。但在沙眼病毒中尚未发现这样的特异性抗原。作者推想若能以萤光炭除去病毒的蛋白质及类脂从而除去其族抗原,然后以 Trachoma and Inclusion Conjunctivitis viruses share many similarities with the Parrot Parvovirus family of viruses, such as size, morphology, developmental and chemical properties, and they share the same family of antigens. They can not be identified by complement fixation assays. Jenkin first discovered that the cell wall of meningococcal virus has species-specific antigens. However, such a specific antigen has not been found in trachoma virus. The authors hypothesize that if the virus proteins and lipids are removed by fluorescent charcoal to remove their antigen,