RSV Data

Respiratory syncytial virus, or RSV, is a respiratory virus that infects the lungs and breathing passages. Although it can affect anyone, RSV is generally considered as the most frequent cause of lower respiratory tract infections in infants and young children. Each year about 125,000 infants are hospitalized with RSV in the United States. For more information on this infection, please visit:

AAP Guidance on the Prevention of RSV in High Risk Infants

RSV in Texas

Summary of RSV season as of 11/22/16:

The RSV season in Texas started statewide in the last week of October, similar to last year.  It started first in the Houston and Galveston area, DSHS Region 6, with low level activity in late September and increasing through October and November, with 30-35% positive PCR testing in November.  The official start of RSV in Region 6 was in the week ending October 15.  The RSV season has next begun in the DFW area, DSHS Region 3, in the last 2 weeks of October, based on PCR testing, and it has continued to grow, up to 25% positive in the week ending 11/12.  The season began in South East Texas/Beaumont, DSHS Region 5, in the week ending 10/29/16.  DSHS Region 7, the Austin and Temple area, has discordant testing with some positive RSV antigen testing but much more PCR testing that does not show signs of a start to the season there yet. There is a trend to growing low level RSV in the Rio Grande Valley, DSHS Region 11, Upper South Texas/San Antonio, DSHS Region 8, and in Upper East Texas/Tyler, DSHS Region 4, but no start to the season there yet.   There is no convincing signs of RSV season onset in other areas with data available 11/22/16.  We encourage reporting of RSV and influenza testing data from laboratories serving significant numbers of children in all areas of Texas to the CDC NREVSS program.  There is more information on the TPS website and at Texas DSHS.

Additional Information:

Pediatricians and their clinical virology partners in Texas have noted that the onset of RSV in some areas of the state is often earlier than is typical for the rest of the United States. The administration of prophylaxis for RSV begins in October for some parts of Texas. We usually see that the RSV season sweeping across the state in the following manner:

  • Upper Coastal TX- Regions  5, 6,- October 1st to February 28th
  • Central, and Lower South TX- Regions   7 , 11 -October 15th to March 14th
  • Northeast and Upper South  TX- Regions  3, 4, 8- November 1st to March 31st
  • Far North and West TX- Regions  1, 2, 9, 10  – November 15th to April 14th

Click here to view a map of the regions and associated counties. Prophylaxis is often begun a couple weeks prior to season onset to allow high risk infants to receive the injections and begin to develop immunity prior to increased levels of disease in their community. Protection from RSV lasts for several weeks after the last dose of RSV antibody.

Though the onset of RSV is not consistent in these areas from year to year, planning for the protection of high risk infants starts months ahead of time based on the best available cumulative data. The TPS Committee on Infectious Diseases and Immunizations has made recommendations on the timing of RSV prophylaxis for several years based on this information. Every year, the TPS ID committee, TPS RSV Taskforce members, and DSHS epidemiology staff gathered years of RSV data statewide, review and clarify data discrepancies, and generate new analyses of the timing of the onset and end of the RSV season by averages of individual seasons and by pooling all the data by week for each region.

Cumulative Data

Data from Previous Years

2012 -2013

2011 - 2012

2010 - 2011

2009 - 2010

2008 - 2009

 2007 - 2008

2006 - 2007

2005 - 2006

2004 - 2005


To get more info or register for RSV alerts, please visit The most recent Texas data can be found at

Are the labs in your area reporting? If not, find out how they can participate in this important effort by clicking HERE.

Please direct questions or suggestions to Donald Murphey, MD, Dell Children’s Medical Center,, 512-628-1820, or Clayton Travis, Texas Pediatric Society,, 512-370-1516.