in the present study the distribution of rubella hemagglutination inhibition (hi) antibody titer in the sera of 1486 women of 18 to 25 years old residing in tehran were examined. sera were pretreated with acid washed kaolin and pigeon red blood cell. titers below 1:10 and in some studies below 1:20 are considered nonimmune to rubella. our results show that 10, 29% of studied population had hi a...

one hundred sera from children 1 - 6 years of age, representative of a large serum collection, were tested for the prevalence of antibodies against different viruses. hemagglutination-inhibition (hi) antibodies were found in 68% for measles; 61 % for rubella; 75'% for influenza a2/hong kong/68, 16% for influenza b/md./59, 0% for group a arboviruses, 10% for group b arboviruses, 3% for phlebotom...

background: pandemic flu had at least two waves in iran. knowing how many of the general population were already exposed to this infection has a major impact on na-tional preventive measures. as of december 30, 2009, a total of 3672 confirmed cases of human infection with a novel influenza a (2009 h1n1) virus had been reported in iran with 140 deaths. objective: in this study we aim to measure,...

to prepare hemagglutination inhibition (hi) antigen the egg drop syndrome virus (edsv) was propagated in 10-day-old embryonated duck eggs. the virus antigen was inactivated with two methods including heating (65°c) and adding 0.5% formaldehyde by considering low destroying effect on hemagglutination (ha) and hi titers. the edsv hi titers of 310 sera and 100 yolks obtained from 23 chicken farms ...

background and aims: influenza vaccination is one of the best way to prevent and control influenza worldwide. it is manufactured by who-licensed companies based on the who expertise committee annually. the aim of this study was partial quality control of the commercial human influenza vaccine 2008-9 and its matching with the circulating strains. materials and methods: the trivalent imported vac...

a dot immunobinding assay ( dia) was used for a quantitative and qualitative assay of rubella antibody. purified antigen and conjugated anti-human immunoglobulin (rahlg) were prepared. nitrocellulose paper dotted with the antigen was added to serially diluted sera or blood samples. the reacting antibodies were visualized by a peroxidase system. development of a colored insoluble substrate was t...