Vaccination is usually routine—a quick injection followed by mild discomfort and protection against disease. Most people experience normal immune responses such as fatigue, arm soreness, or a low-grade fever. These symptoms typically resolve within a day or two. However, in very rare cases, more serious reactions can occur, and recognizing them early is important.
Warning signs include severe chest pain or pressure, shortness of breath, unusual dizziness, swelling or intense pain in the limbs, and a persistent high fever lasting beyond 48 hours. Extreme fatigue that worsens instead of improving may also require attention. While uncommon, these symptoms should never be ignored.
Monitor your health for several days after vaccination and note anything unusual. Seek medical advice promptly if symptoms feel severe or out of the ordinary. Vaccines are safe and highly effective, but staying informed and attentive ensures that rare complications are identified early and treated quickly for the best possible outcome.
