Create a new ViralPop object
createAViralPop(host_id, obs_time, seq, id_seq = "seq_ID",
seq_value = "seq", prop = "prop", compact = FALSE)
host ID which viral pop is observed
time of the observation (numeric or date)
a data.frame of sequences ID, sequences and counts
column name containing the sequences ID
column name containing the sequences
column name containing the count of each sequences
boolean, default FALSE, if TRUE will try group identicals sequences (not implemented yet)