The threat of infectious diseases has been constant in the history of humankind. 75 % of new emerging human infectious diseases in the last thirty years have an animal origin, and 17 % are transmitted by a vector.
Technological advances, such as telescopes and microscopes, have enabled us to enlarge our world, up and down. Microbes are an example of the two scales, small and large.
The main reason for the increase in measles outbreaks and other viral and bacterial diseases in Europe has been the result of the opposition to vaccination.
Light can be considered from many points of view. Light is essential for the development of life on Earth, has determined animal and plant evolution, and has also a role in many aspects of culture and art.
According to the dictionary, vaccination is the administration of vaccines prepared with microbes (attenuated or dead), or parts of microbes, for prophylactic or therapeutic
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