Error 1 'Public Event Click(sender As Object, e As System.EventArgs)' is an event, and cannot be called directly. Use a 'RaiseEvent' statement to raise an event.
Quiza lo estoy invocando mal?
Código:
Dim frmModificarPaciente As frmModificarPaciente = frmModificarPaciente.Instance
frmModificarPaciente.btnNuevaVacuna.Click()