vzv_be_2001_2003: VZV serological data from Belgium from 2001-2003 (line...
In serosv: Model Infectious Disease Parameters from Serosurveys

vzv_be_2001_2003

R Documentation

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

Description

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. \Sexpr[results=rd]{tools:::Rd_expr_doi("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)
)

serosv documentation built on Oct. 18, 2024, 5:07 p.m.