We live in moments of uncertainty due to the serious pandemic promoted by the Sars-CoV-2 virus. Furthermore, in our country, other viruses are there, such as H1N1, Dengue, Zika, Chikungunya, Measles, Yellow Fever, which often leave us perplexed by the differential diagnosis of different neurological syndromes that may, eventually, be associated. We created the NEUROCOVID-RIO Group comprising currently 44 health experts from several areas of the neurological sciences from different hospitals and laboratories from various institutions, including public and private universities. A database in which mathematical instruments are applied, including artificial intelligence, was organized. Preliminary findings show that well defined neurological syndromes seems to be more associated to Zika and Chikungunia viruses than with Sars-Cov-2.