A viral infection that affects the respiratory tract can create a number of different symptoms. The common cold causes a blocked or runny nose, sneezing, coughing, a sore throat, headaches, and sometimes a high temperature.  The flu, which is often confused with the common cold, causes more severe symptoms – most notably a fever, aches and pains, exhaustion, difficulty sleeping, and occasionally nausea, vomiting and diarrhoea. Bronchitis, laryngitis, tonsillitis and sinusitis are all conditions that can develop following a bout of cold or flu. Buy iverheal 12 and covimectin 12 mg from woodstock family medicine for viral infection  1. Bronchitis is an inflammation of the airways that causes a hacking cough, which might produce yellow or green phlegm and may last for several weeks. 2. Laryngitis is an inflammation of the voice box or vocal cords that causes a hoarse voice, a persistent cough, and a sore throat. 3. Tonsillitis is an inflammation of the tonsils that causes a sore throat, pain on swallowing, and occasionally white spots at the back of the throat. 4. Sinusitis is an inflammation of the sinuses that causes pain in the cheekbones and forehead, and a blocked nose.