Serum IgM antibody and influenza A infection.

Abstract

(Dobrovolskaya, 1971;Daugharty et al., 1972;Brown and O'Leary, 1973;Urquhart, 1974;Buchner et al., 1976). The present study aimed to show the frequency with which sucrose density gradient ultracentrifugation followed by haemagglutination inhibition (HI) could detect specific serum IgM antibodies in patients recently infected with influenza A. The results obtained by this technique were compared with the standard complement fixation test. Material and methods VIRUSThe virus used in all haemagglutination-inhibition tests was A/Port Chalmers/1/73 (A/PC/73) which was propagated in fertile hens' eggs.

Guillain‐Barré Syndrome and Influenza Virus Infection

“…Although it is time consuming, CFT was chosen to screen patients' samples for recent influenza. Indeed, CFT preferentially detects IgM and provides a particularly reliable means to detect recent viral infection [24][25][26][27]. This screening approach was then confirmed by strainspecific HIAs for cases related to influenza A virus.…”

Influenza virus infection in the second and third trimesters of pregnancy: a clinical and seroepidemiological study

“…TMB was added and absorbance read at 620 nm. Cord blood samples from six influenza cases were also tested for the presence of IgM anti‐influenza by haemagglutination inhibition assay following sucrose density gradient fractionation 12–13 .…”

Pathologisch-anatomische befunde bei pl�tzlichem, unerwartetem tod von kindern und erwachsenen mit influenza-A-infektion

“…Der H~magglutinations-Hemmtest erlaubt eine Identifikation des Virusstammes und damit eine Einordnung der Befunde in die aktuelle epidemiologische Situation (Julkunen et al 1985). Sie persistieren bis 112 Tage nach der Infektion (Buchner et al 1977). IgM-Antik/3rper ben6tigen zu ihrer Ausbildung eine gewisse Zeit (Jao et al 1970).…”

“…IgM-Antik/3rper ben6tigen zu ihrer Ausbildung eine gewisse Zeit (Jao et al 1970). Dart~ber hinaus scheinen Kinder ganz allgemein nut zu einer schwachen IgM-Antwort zu neigen (Meurman 1983), zus~itzlich fehlt bei Influenza A-und B-Infektionen bei 20-30% eine IgM-Antwort (Urquhart 1974;Buchner et al 1977;Goldwater et al 1982). Sie persistieren bis 112 Tage nach der Infektion (Buchner et al 1977).…”