Bacteria: Strep throat is an infection caused by a particular strain of streptococcus bacteria. This infection can also damage the heart valves (rheumatic fever) and kidneys (nephritis), cause scarlet fever, tonsillitis, pneumonia, sinusitis, and ear infections.nfections from viruses or bacteria are the main cause of sore throats and can make it difficult to talk and breathe. Allergies and sinus infections can also contribute to a sore throat. If you have a sore throat that lasts for more than five to seven days, you should see your doctor.
Body temperature norms. Normal body temperature varies by person, age, activity, and time of day. The average normal body temperature is generally accepted as 98.6Â°F (37Â°C). Some studies have shown that the normal body temperature can have a wide range, from 97Â°F (36.1Â°C) to 99Â°F (37.2Â°C). A temperature over 100.4Â°F (38Â°C) most often means you have a fever caused by an infection or illness.
Normal human body temperature varies slightly from person to person and by the time of day. Consequently, each type of measurement has a range of normal temperatures. The range for normal human body temperatures, taken orally, is 7002309950000000000â 36.8Â±0.5 Â°C (7002309927777777777â 98.2Â±0.9 Â°F).n addition to varying throughout the day, normal body temperature may also differ as much as 0.5 Â°C (0.9 Â°F) from one day to the next, so that the highest or lowest temperatures on one day will not always exactly match the highest or lowest temperatures on the next day.