Hi,My son has completed 4 months today. Since last 2 days he is having hoarse voice. On 13 he vaccinated with penta 3 and IPV. I am noticing that hoarse voice problem started after vaccination. I gave him 3 dose of paracetamol for fever. In 3 month he suffered with congestion. Is both the problem linked with each other. What should I need to do? And please let me know the list of vaccination required.