The study found that the SARS-CoV-2 virus can significantly disrupt the development of the placenta in pregnant women, leading to harmful effects on fetal growth.

The research team discovered that the viral infection triggers a significant increase in the woman's immune response, reducing genes that are known to stop blood clots and support fetal growth.

This immune response can cause inflammation in the placenta, leading to decreased oxygen and nutrient supply to the fetus.

The study analyzed the medical records of over 1,000 pregnant women who were tested positive for Covid-19 and found that they were more likely to experience preterm birth, low birth weight, and gestational diabetes.

The researchers also found that the risk of pregnancy complications increased with the severity of the Covid-19 infection.

The study's lead author, Dr. Lo Hoi-ying, expressed concern over the findings, stating that the study highlights the importance of monitoring the health of pregnant women during the pandemic.

She added that the findings may also have implications for the development of future vaccines and treatments for pregnant women.

In light of the study's findings, healthcare professionals are urging pregnant women to take extra precautions to protect themselves and their unborn babies from the virus.

This includes avoiding close contact with sick individuals, wearing masks, and following social distancing measures.

In conclusion, the joint study by UST and CUHK highlights the increased risk of pregnancy complications associated with Covid-19.

Pregnant women are advised to take necessary precautions to protect themselves and their unborn babies, and healthcare professionals are working to monitor the health of pregnant women during the pandemic.