The reports of human disease attributed to bird mites are rare, but they do occur. There have been reports by some people of strange fibers on the skin and Morgellons symptoms that started after a mite infestation, but the link is vague and requires further research.
A universe is a business-oriented mapping of the data structure found in databases: tables, columns, joins, etc. It can represent any specific application, system, or group of users. For example, a universe can relate to a department in a company such as marketing or accounting.
We are seeing them just 600 million years after the Universe's birth in the Big Bang. Galaxy clusters are the largest structures in the Universe, comprising hundreds to thousands of galaxies bound together by gravity.