医药生物行业周报（5月第3周）：新冠进入周期性流行-20250519

Investment Rating - The report provides a positive outlook for the pharmaceutical and biotechnology sector, indicating a strong performance compared to the broader market indices [2][3]. Core Insights - The pharmaceutical and biotechnology sector saw a weekly increase of 1.27%, outperforming the Wind All A index (0.72%) and the CSI 300 index (1.12%) [3][8]. - Key sub-sectors such as raw materials (3.79%), in vitro diagnostics (2.25%), and vaccines (1.98%) showed significant gains, while offline pharmacies (-1.24%) and blood products (-0.03%) experienced declines [3][9]. - The report highlights the competitive advantage of tirzepatide over semaglutide in weight loss efficacy, with tirzepatide achieving a 1.47 times greater relative weight reduction and a 64.6% participant rate achieving ≥15% weight loss compared to 40.1% for semaglutide [3][12]. - COVID-19 is entering a phase of periodic outbreaks, with increasing infection rates reported in various regions, prompting recommendations for booster vaccinations among older populations [3][11]. Market Weekly Review - The pharmaceutical and biotechnology sector's performance from May 12 to May 16 showed a 1.27% increase, with raw materials leading the gains at 3.79% [8]. - Notable individual stock movements included a significant rise in COVID-19 related stocks like Tuoxin Pharmaceutical, which surged by 45% [11]. Industry News and Key Company Announcements - Recent monitoring data from health authorities in Hong Kong and Singapore indicate a rise in COVID-19 cases, suggesting a potential peak in infections soon [11][13]. - Eli Lilly's tirzepatide clinical trial results demonstrate its superiority over Novo Nordisk's semaglutide in weight loss, indicating a promising market opportunity for obesity treatments [12][13]. - Several companies, including North Sea Kangcheng and Hengrui, have made significant announcements regarding new drug approvals and clinical trials, reflecting ongoing innovation in the sector [13][14].