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1. Verfasser:	Clara Nancy Gutiérrez
Format:	Artículo científico
Sprache:	es
Veröffentlicht:	Sociedad Venezolana de Microbiología 2010
Schlagworte:	Biología ASO antiDNasa B infecciones estreptocócicas estreptococo beta hemolítico del grupo A
Online-Zugang:	https://www.redalyc.org/articulo.oa?id=199416355003
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Frecuencia de antiestreptolisina O y antidesoxirribonucleasa B como indicador de infección estreptocócica en estudiantes de una unidad educativa del estado Aragua Clara Nancy Gutiérrez María Chacón María del Carmen Martínez Bethelgeuse Sibrian Yaraceli Márquez Edmundo Herrera Liliana Torres Luis Pérez-Ybarra Biología ASO antiDNasa B infecciones estreptocócicas estreptococo beta hemolítico del grupo A En este estudio se determinó la frecuencia de anticuerpos antiestreptolisina O (ASO) por neutralización y nefelometría yanticuerpos antidesoxirribonucleasa B (antiDNasa B) mediante nefelometría en 177 estudiantes seleccionados de manera aleatoria de unaunidad educativa del municipio Francisco Linares Alcántara, estado Aragua. El porcentaje de títulos elevados para ASO por neutralizaciónobtenido en los escolares fue 8,5% y por nefelometría 39,6%, estableciéndose que el método nefelométrico detectó mayor porcentaje deindividuos con títulos altos. Con respecto a la antiDNasa B, 28,3% de los estudiantes presentaron títulos por encima del valor normal. Losescolares con edades entre 8 a 10 años exhibieron el mayor porcentaje de títulos elevados. La alta prevalencia de ASO observada revelaque la infección por S. pyogenes es importante. Las complicaciones y secuelas no se estudiaron, por lo que las medidas de prevención ycontrol deben dirigirse a prevenir las posibles secuelas. Tomando en cuenta que la mayoría de los estudiantes estaban asintomáticos se hacenecesario realizar estudios en los cuales se aísle S. pyogenes, como también estudios en los cuales se establezcan los valores referencialespara las diferentes pruebas realizadas en este estudio 2010 artículo científico 1317-973X https://www.redalyc.org/articulo.oa?id=199416355003 es http://www.redalyc.org/revista.oa?id=1994 Revista de la Sociedad Venezolana de Microbiología application/pdf Sociedad Venezolana de Microbiología Revista de la Sociedad Venezolana de Microbiología (República Bolivariana de Venezuela) Num.1 Vol.30

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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