| naturally acquired immunity to influenza type a: a further prospective study. | during the 1976 influenza epidemic, the incidence and severity of attack by a/victoria/3/75 strain were studied in 312 participants who were divided into two groups: in group 1 were 216 participants who had a history of laboratory-proven infection by one of the earlier strains of hong kong subtype; in group 2 were 96 participants who had no known history of such prior infection. no participant in either group received influenza vaccine. the efficacy of clinical immunity, acquired as a result of ... | 1977 | 611373 |
| influenza in melbourne, 1982. epidemiology and virology. | the major features of the outbreaks of influenza a and b, which occurred in melbourne during the winter of 1982, are described. diagnoses of influenza a or influenza b were established in 310 patients by virus isolation, immunofluorescence, and serological tests. immunofluorescence was found to be a valuable, rapid, but considerably less sensitive, test than virus isolation, and serodiagnosis was the test of choice either when patients did not present or when specimens were not collected until l ... | 1984 | 6377029 |
| annual report of the national influenza surveillance scheme, 2007. | the year 2007 saw the most severe influenza season since national reporting of influenza began in 2001. early in the season the national incident room was activated to provide effective national surveillance, reporting and management of the 2007 seasonal influenza outbreak. a surveillance team were tasked with establishing enhanced surveillance for the 2007 season and investigating unusual events in this outbreak. key data required to comprehensively describe the number of cases, morbidity, mort ... | 2008 | 18767420 |
| h1n1 swine origin influenza infection in the united states and europe in 2009 may be similar to h1n1 seasonal influenza infection in two australian states in 2007 and 2008. | the population-based impact of infection with swine origin influenza a (h1n1) virus infection was not clear in the early days of the epidemic towards the end of may 2009. australia had seven confirmed cases by 22 may 2009. we aimed to compare available data on swine origin influenza a (h1n1) virus infection overseas with seasonal influenza a (h1n1) virus infection in australia to assist with forward planning. | 2009 | 19627376 |
| epidemiological characteristics of pandemic influenza h1n1 2009 and seasonal influenza infection. | the median age of patients with pandemic influenza h1n1 2009 infection was reported as 20-25 years in initial case series from europe and the united states. this has been lowered to 13 years in the us after testing of more patients, but this may reflect differential increased testing of school-aged children as part of the pandemic response. the median age of patients with seasonal influenza a(h1n1) infection identified through sentinel surveillance in western australia and victoria in 2007-2008 ... | 2009 | 19645642 |
| lessons from the front lines: the prehospital experience of the 2009 novel h1n1 outbreak in victoria, australia. | the h1n1 (swine influenza) 2009 outbreak in victoria, australia, provided a unique opportunity to review the prehospital response to a public health emergency. as part of ambulance victoria's response to the outbreak, relevant emergency response plans and pandemic plans were instigated, focused efforts were aimed at encouraging the use of personal protective equipment (ppe), and additional questions were included in the call-taking script for telephone triage of emergency calls to identify poten ... | 2009 | 19952886 |
| comparison of the incidence of influenza in relation to climate factors during 2000-2007 in five countries. | relatively few international comparisons of the incidence of influenza related to climate parameters have been performed, particularly in the eastern hemisphere. in this study, the incidence of influenza and climate data such as temperature, relative humidity, and rainfall, from cities at different latitudes with contrasting climates: singapore, hong kong (china), ulaanbaatar (mongolia), vancouver (canada), and three australian cities (brisbane, melbourne and sydney) were examined to determine w ... | 2010 | 20872724 |
| transmission characteristics of the 2009 h1n1 influenza pandemic: comparison of 8 southern hemisphere countries. | while in northern hemisphere countries, the pandemic h1n1 virus (h1n1pdm) was introduced outside of the typical influenza season, southern hemisphere countries experienced a single wave of transmission during their 2009 winter season. this provides a unique opportunity to compare the spread of a single virus in different countries and study the factors influencing its transmission. here, we estimate and compare transmission characteristics of h1n1pdm for eight southern hemisphere countries/state ... | 2011 | 21909272 |