Mauricio Moreno Sereno

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Antiserum prepared against the M37 strain of rotavirus, recovered from an asymptomatic newborn infant in Venezuela, neutralized two prototype human rotaviruses that define two separate serotypes: serotype 1 (Wa) and serotype 4 (ST3). Thus, the M37 strain is a naturally occurring intertypic rotavirus. Analysis of reassortant viruses produced during(More)
The nucleotide and deduced amino acid sequence of the gene 4 of murine rotavirus strain Eb were determined. The gene is 2359 nucleotides in length and encodes for a protein of 775 amino acids. Comparison of the VP4 amino acid sequence of the Eb strain with several human and animal rotavirus strains which represent all of the currently recognized distinct(More)
A single-gene substitution reassortant 11-1 was generated from two porcine rotaviruses, OSU (serotype 5) and Gottfried (serotype 4). This reassortant derived 10 genes, including gene 4 encoding VP3, from the OSU strain and only gene 9, encoding a major neutralization glycoprotein (VP7), from the Gottfried strain and was thus designated VP3:5; VP7:4. Oral(More)
Rotaviruses are the leading cause of severe diarrhea in infants and young children worldwide. Thus, the development of an effective rotavirus vaccine is a major public health goal. This study was performed to identify the gene or genes responsible for rotavirus virulence or host range restriction and attenuation in a natural host. Such knowledge could have(More)
The sequences of the gene encoding VP7 (the major outer capsid protein) from one bovine and three human rotavirus strains were determined because of their unusual VP7 specificities. Two of the human strains (PA 169 and PA 151) had VP7 serotype 6 specificity whereas the two other strains, recovered from a child (HAL 1166) and a calf (678) belonged to VP7(More)
The SB-1A rotavirus recovered from a diarrheic piglet in the United States is a naturally occurring intertypic rotavirus. When studied by reciprocal neutralization tests, the SB-1A virus was similar, if not identical, to the porcine Gottfried virus (serotype 4) and the porcine OSU virus (serotype 5). Analysis of reassortant viruses prepared from the SB-1A(More)
Gnotobiotic newborn calves were found to be susceptible to infection with the reovirus-like agent of human infantile gastroenteritis (HRVL). Infection was based on (i) seroresponse using immunofluorescence and (ii) fecal shedding of virus particles using electron microscopy. Virus was detected in fecal samples for at least 2 to as long as 7 days after(More)