Seasonal dynamics of influenza in Brazil: the latitude effect

BMC Infectious Diseases
Alexandra AlmeidaPaula Mendes Luz

Abstract

Influenza is a global transmissible disease. Its dynamics is far better understood in temperate climates than in the tropics. We aim to close this knowledge gap between tropical and temperate regions by showing how the influenza seasonality evolves in Brazil, a tropical country that encompasses a wide range of latitudes and six climatic sub-types. We analyzed a state-level, weekly Syndrome of Acute Respiratory Disease (SARI) incidence data ranging from 2010 to 2016. We combined two techniques hierarchically: first the wavelet decomposition technique to detect annual periodicity and then circular statistics to describe seasonal measures of the periodic states. We found significant annual periodicity in 44% of the states. For these, we calculated several seasonal measures such as the center of gravity or mean timing of activity. The relationship between the seasonal signatures and latitude was clear and statistically significant. States with seasonal signature are clustered along the coast. Most Amazonian and Central West states exhibit no seasonal behavior. Among the seasonal states, influenza starts in Northeast region, spreading southbound. Our study advances the comprehension of influenza seasonality in tropical areas and cou...Continue Reading

References

Mar 3, 2006·PLoS Medicine·Cecile ViboudLone Simonsen
Apr 1, 2006·Science·Cecile ViboudBryan Grenfell
Mar 21, 2007·American Journal of Epidemiology·Wladimir Jimenez AlonsoMark A Miller
Mar 7, 2008·Oecologia·Bernard CazellesNils C Stenseth
Sep 25, 2009·Intervirology·Clyde DapatHiroshi Suzuki
Sep 18, 2010·Epidemics·Justin LesslerDerek A T Cummings
Nov 15, 2011·Infection Control and Hospital Epidemiology : the Official Journal of the Society of Hospital Epidemiologists of America·Marcelo CarneiroLia Gonçalves Possuelo
Jul 26, 2012·The Journal of Infectious Diseases·Eduardo Azziz BaumgartnerJoseph Bresee
Aug 8, 2012·PloS One·Cynthia Schuck-PaimWladimir Jimenez Alonso
Oct 4, 2014·Emerging Infectious Diseases·Parvaiz A KoulRenu B Lal
Dec 9, 2014·F1000Research·Stephen J BeckettHywel T P Williams
Feb 26, 2015·Influenza and Other Respiratory Viruses·Wladimir Jimenez AlonsoJean-Michel Heraud
May 17, 2015·International Journal of Epidemiology·Eveline NüeschJuan P Casas
Jan 20, 2016·Influenza and Other Respiratory Viruses·Siddhartha SahaGroup of Asian Researchers on Influenza (GARI)
Apr 8, 2016·Molecular Neurobiology·G F Cittolin-SantosD O Souza
May 21, 2016·The Lancet Global Health·Juliette PaireauNicole E Basta
May 16, 2017·Current Opinion in Virology·Michael Schotsaert, Adolfo García-Sastre

Citations

Apr 25, 2018·BMC Pregnancy and Childbirth·Suvanna AsavapiriyanontKim A Lindblade
Mar 4, 2020·Viruses·Zayne Y CallahanChantel Sloan
Apr 23, 2020·Cadernos de saúde pública·Leonardo Soares BastosMarcelo F C Gomes
Mar 6, 2019·BMC Infectious Diseases·Alexandra AlmeidaPaula Mendes Luz

Related Concepts

Related Feeds

Allergy & Infectious Diseases

Allergies result from the hyperreactivity of the immune system to some environmental substance and can be life-threatening. Infectious diseases are caused by organisms including bacteria, viruses, fungi and parasites. They can be transmitted different ways, such as person-to-person. Here is the latest research on allergy and infectious diseases.

Allergy & Infectious Diseases (ASM)

Allergies result from the hyperreactivity of the immune system to some environmental substance and can be life-threatening. Infectious diseases are caused by organisms including bacteria, viruses, fungi and parasites. They can be transmitted different ways, such as person-to-person. Here is the latest research on allergy and infectious diseases.