Month: October 2020
Antibodies Persist for Four Months after Infection; Infection Fatality Ratio 0.3%, Much Higher in Older Patients.
This Icelandic study measured a variety of IgG and IgM antibodies to SARS-CoV-2 in six groups of Icelanders who had either never been tested or had tested negative and in two groups of Icelanders who had tested positive and had recovered. They weighted the sample by age and sex to estimate the number of Icelanders who had been infected and used that to estimate the infection fatality ratio (deaths/[symptomatic + asymptomatic positives]) and case fatality ratio (deaths/symptomatic positives). Among patients who had experienced a symptomatic infection, IgG antibody levels remained stable over a four-month period, which is encouraging in terms ... Read more