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VZV serological data from Belgium from 2001-2003 (line listing)

Source: R/data.R
vzv_be_2001_2003.Rd

The survey is the same as the one used to study the seroprevalence of parvovirus B19 in Belgium, as described above.

Usage

vzv_be_2001_2003

Format

A data frame with 4 variables:

age

Age of individual

seropositive

If the individual is seropositive or not

gender

Gender of individual

VZVmIUml

VZV milli international units per ml

Source

MOSSONG, J., N. HENS, V. FRIEDERICHS, I. DAVIDKIN, M. BROMAN, B. LITWINSKA, J. SIENNICKA, et al. "Parvovirus B19 Infection in Five European Countries: Seroepidemiology, Force of Infection and Maternal Risk of Infection." Epidemiology and Infection 136, no. 8 (2008): 1059-68. doi:10.1017/S0950268807009661

Examples

# Reproduce Fig 4.7 (right panel), p.71
library(dplyr)
df <- vzv_be_2001_2003 %>%
  mutate(age = round(age)) %>%
  group_by(age) %>%
  summarise(pos = sum(seropositive), tot = n())
plot(df$age, df$pos / df$tot,
  cex = 0.036 * df$tot, pch = 19, xlab = "age", ylab = "seroprevalence",
  xlim = c(0, 45), ylim = c(0, 1)
)