Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_56 (date INTEGER, number VARCHAR)
### Question:
What is the latest date that has a serial number of Infec 107CDSX?
### Answer:
SELECT MAX(date) FROM table_name_56 WHERE number = "infec 107cdsx"