The virus in your Crinum (not evident except in a few of those images) is not uncommon in Haemanthus albiflos. It is apparently mild but in fact it has a demolishing action in a couple of years. Crinums are resistant to viruses and act as carriers for other amaryllids. As a matter of fact, several striking Crinum hybrids are virused. The mosaic is most evident in new growth just appearing IF YOU DO NOT fertilize them. Any amount of nitrogen fertilizer will turn the foliage so green as to mask this early mosaic pattern. As the leaf develops it turns a more intense green and the pattern is hidden. Zephyranthes, Habranthus, etc. are susceptible to virus infections as any other amaryllid. A lot of the Zephyranthes grandiflora in the trade is virused. It shows in distortion of the leaf edge or lamina. Of course it can infect other species.