Dataset Information

Human parainfluenza virus circulation, United States, 2011-2019.

ABSTRACT:

Background

Human parainfluenza viruses (HPIVs) cause upper and lower respiratory tract illnesses, most frequently among infants and young children, but also in the elderly. While seasonal patterns of HPIV types 1-3 have been described, less is known about national patterns of HPIV-4 circulation.

Objectives

To describe patterns of HPIVs circulation in the United States (US).

Study design

We used data from the National Respiratory and Enteric Virus Surveillance System (NREVSS), a voluntary passive laboratory-based surveillance system, to characterize the epidemiology and circulation patterns of HPIVs in the US during 2011-2019. We summarized the number of weekly aggregated HPIV detections nationally and by US census region, and used a subset of data submitted to NREVSS from public health laboratories and several clinical laboratories during 2015-2019 to analyze differences in patient demographics.

Results

During July 2011 - June 2019, 2,700,135 HPIV tests were reported; 122,852 (5 %) were positive for any HPIV including 22,446 for HPIV-1 (18 %), 17,474 for HPIV-2 (14 %), 67,649 for HPIV-3 (55 %), and 15,283 for HPIV-4 (13 %). HPIV testing increased substantially each year. The majority of detections occurred in children aged ? 2 years (36 %) with fluctuations in the distribution of age by type.

Conclusions

HPIVs were detected year-round during 2011-2019, with type-specific year-to-year variations in circulation patterns. Among HPIV detections where age was known, the majority were aged ? 2 years. HPIV-4 exhibited an annual fall-winter seasonality, both nationally and regionally. Continued surveillance is needed to better understand national patterns of HPIV circulation.

SUBMITTER: DeGroote NP

PROVIDER: S-EPMC7106518 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Human parainfluenza virus circulation, United States, 2011-2019.

DeGroote Nicholas P NP Haynes Amber K AK Taylor Calli C Killerby Marie E ME Dahl Rebecca M RM Mustaquim Desiree D Gerber Susan I SI Watson John T JT

Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology 20200109

<h4>Background</h4>Human parainfluenza viruses (HPIVs) cause upper and lower respiratory tract illnesses, most frequently among infants and young children, but also in the elderly. While seasonal patterns of HPIV types 1-3 have been described, less is known about national patterns of HPIV-4 circulation.<h4>Objectives</h4>To describe patterns of HPIVs circulation in the United States (US).<h4>Study design</h4>We used data from the National Respiratory and Enteric Virus Surveillance System (NREVSS ...[more]

PMID: 31954277

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Project description:IntroductionThe smokeless tobacco (SLT) industry in the U.S. continues to transform with novel products amid an evolving regulatory environment. We report SLT sales trends in the U.S. by analyzing retail market scanner data from 2011 through 2019.MethodsNational SLT sales data were obtained from Nielsen's Convenience Track System for January 2011 to December 2019. UPC codes were used to classify products by attributes including type, parent company, brand, form, and flavor. Market share was calculated as percentage of total unit sales. Detailed product analysis was presented for moist snuff, snus, and tobacco-free nicotine products.ResultsSLT sales increased by 5.8% between 2011 and 2016 but declined by 3.9% from 2016 to 2019. Moist snuff sales increased by 8.1% between 2011 and 2016 and then declined 7.4% from 2016 to 2019 but still accounted for roughly 90% of the overall market annually. Between 2011 and 2019, snus sales consistently increased while sales of chew, dry snuff, and dissolvables decreased. Tobacco-free nicotine products emerged in 2016 and captured 4.0% of the market by 2019. Portion pouch packaging and flavors showed consistent growth although their popularity varied by the type of smokeless product.ConclusionThis study extends our previous work on U.S. SLT market trends through 2019. Overall sales increased between 2011 and 2016 but there were signs of leveling off including declining sales of moist snuff. Newer products continue to gain market share. Continued monitoring of SLT sales is needed, particularly given the new modified risk status of several products.ImplicationsThis study analyzed the last 9 years of smokeless tobacco market data (2011-2019) to describe recent trends in sales. Overall, the smokeless product category is quite resilient although signs suggest downward trends among some product categories and features. New types of smokeless tobacco products (eg, snus and tobacco-free nicotine pouches) account for a growing share of the market.

Dataset Information

Human parainfluenza virus circulation, United States, 2011-2019.

Background

Objectives

Study design

Results

Conclusions

Publications

Human parainfluenza virus circulation, United States, 2011-2019.

Similar Datasets

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