Write SQL query to solve given problem: How many inspections done in 2010 had serious food safety issue?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T2.inspection_id) FROM establishment AS T1 INNER JOIN inspection AS T2 ON T1.license_no = T2.license_no WHERE strftime('%Y', T2.inspection_date) = '2010' AND T1.risk_level = 3