China
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COVID-19—%
Influenza—%
Respiratory syncytial virus—%
PUBLIC HEALTH · DATA OBSERVATORY
China & U.S. respiratory virus monitor
Follow COVID-19, influenza and RSV surveillance using traceable public data.
◉ Checked weeklyUsually Saturday · Beijing time
LATEST AVAILABLE
Latest reported weeks
Each country uses its own most recently published surveillance week; dates may differ.
CHINA CDC
United States
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COVID-19—%
Influenza—%
Respiratory syncytial virus—%
WEEKLY TRENDS
Weekly test positivity
Each chart has its own vertical scale. Hover for values or open the weekly data table.
China | Sentinel outpatient specimens
Nucleic-acid tests on respiratory samples from sentinel outpatient influenza-like-illness cases; excludes Hong Kong, Macao and Taiwan.
COVID-19InfluenzaRespiratory syncytial virus
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View weekly data and sources
| Week ending | COVID-19 (%) | Influenza (%) | Respiratory syncytial virus (%) |
|---|
United States | Laboratory specimens
COVID-19 and RSV use NREVSS reports; influenza uses clinical and collaborating laboratories.
COVID-19InfluenzaRespiratory syncytial virus
Waiting for data…
View weekly data and sources
| Week ending | COVID-19 (%) | Influenza (%) | Respiratory syncytial virus (%) |
|---|
Each chart has its own vertical range. Line patterns and point shapes identify viruses; missing weeks are not connected.
CLASSICAL CALENDAR · 五运六气
Five Movements & Six Qi
Explore a traditional calendrical framework and its classical sources, using UTC+8.
Language: English · 中文查询
Choose a moment
Follows the current time by default, or choose a date and time.
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Calendar year—
Yearly movement—
Governing heaven—
At the spring—
SIX QI · CURRENT PERIOD
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Host qi—
Guest qi—
FIVE MOVEMENTS · SIMPLIFIED
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Term-offset convention; early/late guest-movement shifts are not calculated.
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Host movement—
Guest movement—
First
Jueyin
Jueyin
Second
Shaoyin
Shaoyin
Third
Shaoyang
Shaoyang
Fourth
Taiyin
Taiyin
Fifth
Yangming
Yangming
Final
Taiyang
Taiyang
Classical context for this period
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Liu Kui, Songfeng on Epidemics (Chinese) ↗
The Song-dynasty Compendium of Sagely Beneficence also records Minister Fire in this period and discusses historical treatment principles, not a modern prescription.
Historical treatment principles
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The same chapter also discusses balancing cold and heat as a historical principle. Individual clinical assessment is necessary.
Method, boundaries and sources
The six periods begin at Major Cold, Spring Equinox, Grain Full, Major Heat, Autumn Equinox and Minor Snow. The cycle year changes at Major Cold. Host qi is fixed; guest qi follows the governing-heaven sequence.
Movements use a simplified convention: Major Cold, then 13 days after Spring Equinox, 10 after Grain in Ear, 7 after End of Heat and 4 after Start of Winter. Guest movement starts with the yearly element. Early or late guest movement, corrective cycles and other schools are not calculated.
Supported from Major Cold 1901 to before Major Cold 2101, in fixed UTC+8. The 2026 boundaries use published HKO/NAOJ minutes; other years use sxtwl 2.0.7 rounded to minutes. Values near a boundary can differ by a few minutes across ephemerides.
Background on host qi (Chinese) ↗ · HKO 2026 solar terms ↗ · NAOJ 2026 almanac ↗
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This is a traditional calendrical model, not a weather observation, epidemic forecast or individual diagnosis. Historical treatment concepts are not proven modern treatments; care for COVID-19 or influenza requires clinical evaluation and current guidelines.
HOW TO READ
Reading these charts
Test positivity is the percentage of monitored tests that were positive. It can change with care-seeking, testing practices and who is sampled.
China’s reporting week runs Monday through Sunday; U.S. CDC weeks end on Saturday. Sampling and laboratory networks may also differ by virus.
The page attempts to retrieve official data weekly. If a source fails, the last successful snapshot remains visible with a warning. This is public-health information, not individual diagnosis.