China reports uptick in COVID-19 cases

China is seeing a gradual rise in COVID-19 infections, according to the latest data released by the Chinese Center for Disease Control and Prevention (China CDC).

During the week of July 13 to July 19, the COVID-19 test positivity rate continued to trend upward, reaching a moderate level of transmission nationwide. Southern provinces reported higher positivity rates than northern regions, while people aged 15 to 59 recorded the highest positivity rate among all age groups. Other monitored respiratory viruses remained at low levels.

Why is coronavirus making a comeback this summer?

According to the Shanghai Center for Disease Control and Prevention (Shanghai CDC), the seasonal uptick is being fueled by a combination of factors.

One key reason is waning immunity. With considerable time having passed since the last major wave of infections, antibodies built up from previous infections have naturally declined over time, leaving more people vulnerable to the virus.

Summer travel is also playing a role. With schools on break, more people are traveling, visiting family and friends, and moving between cities and provinces. This increased mobility gives the virus more opportunities to spread from one region to another.

Another contributing factor is increased time spent in air-conditioned indoor spaces. As temperatures soar, many people spend most of the day indoors with the windows closed. In crowded, poorly ventilated environments, respiratory droplets and airborne particles can spread more easily.

How to reduce your risk?

It is recommended to wear a mask in crowded indoor settings, particularly in places such as hospitals and on public transportation.

Good hygiene also remains important. Remember to wash your hands regularly, especially after returning home and before meals. Even if air conditioning is running continuously, make time each day to open windows and improve indoor ventilation. When coughing or sneezing, cover your mouth and nose with a tissue or the inside of your elbow instead of your hands to help reduce the spread of germs.

A healthy lifestyle can also make a difference. Getting enough sleep, eating a balanced diet, staying physically active and avoiding late nights can all help support your immune system and lower your risk of infection.

Vulnerable populations, including older adults, people with obesity and those with chronic illnesses or weakened immune systems, are at greater risk of developing severe illness.

Anyone experiencing symptoms such as fever, a severe sore throat or a persistent cough should seek medical attention promptly, as early treatment can help prevent the condition from worsening.