Hi, I had gone through your question and understand your concerns. No ,it is not related to vaccination ,it looks like an episode of laryngitis . Irritability and shift in eating behaviour could to due to vaccination as 2 months vaccine does include DPT vaccine which commonly causes fever ,swelling and irritability for 2-3 days. Episode of laryngitis itself may be causing some of these symptoms or aggravating , do consult your health care provider to rule out some serious issue . Hope this answers your question. If you have additional questions then please do not hesitate in writing to us. *Always check for history of allergy before taking any medicine. Take care. • DISCLAIMER: - All the information provided here is for information purpose only , it is not a substitute for the advice of a physician after physical examination , it is not intended to replace your relationship with your doctor. This information in no way establishes a doctor-patient relationship. Before acting anything based on this information do consult your doctor. I recommend that online users seek the advice of a physician who can perform an in-person physical examination