MEXICO CITY, April 30 (Reuters) -

Consumption and foot traffic at Walmart's Mexico unit

has begun to pick up in the second quarter, the

firm's finance chief said on Wednesday.

"As we look to April, we already see improvements in terms

of consumption ... on a like-for-like basis," CFO Paulo Garcia

told analysts in a call to review the firm's first quarter

results.

Garcia added that the increase had led the firm to hold

its outlook for sales growth for the full year at 6% to 7%,

after a

weaker-than-expected first quarter

.